WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WAMMS.02MS11
Distribution Date: 12/26/2003

Class	Cusip	Orig Prin Bal	Begin Prin Bal	Int Rate Accrued	Int Rate Paid	Int Dist	Prin Dist	Int Shortfall	Prin Loss	Deferred Interest	Int Reimbursed	Unscheduled Int	Prin Reimbursed	Subsequent Recoveries	Total Dist	Ending Class Bal
IA1	939336ME0	$180,542,000.00	$69,149,307.14	5.2500000000%	5.2500000000%	$302,528.22	$2,428,232.19	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$2,730,760.41	$66,721,074.95
IIA1	939336MF7	$130,274,000.00	$21,739,207.25	5.7500000000%	5.7500000000%	$104,167.03	$1,424,654.01	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$1,528,821.04	$20,314,553.24
IIA2	939336MG5	$39,669,000.00	$39,669,000.00	5.7500000000%	5.7500000000%	$190,080.63	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$190,080.63	$39,669,000.00
IIA3	939336MH3	$3,395,000.00	$3,395,000.00	5.7500000000%	5.7500000000%	$16,267.71	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$16,267.71	$3,395,000.00
IIA4	939336MJ9	$3,000,000.00	$3,000,000.00	5.7500000000%	5.7500000000%	$14,375.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$14,375.00	$3,000,000.00
IIA5	939336MK6	$2,252,000.00	$2,252,000.00	5.7500000000%	5.7500000000%	$10,790.83	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$10,790.83	$2,252,000.00
IIA6	939336NQ2	$4,748,000.00	$4,748,000.00	5.7500000000%	5.7500000000%	$22,750.83	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$22,750.83	$4,748,000.00
IIA7	939336NR0	$33,211,000.00	$5,542,017.70	1.6250000000%	1.6250000000%	$7,504.82	$363,189.77	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$370,694.59	$5,178,827.93
IIA8	939336NS8	$34,211,000.00	$5,708,890.65	6.8750000000%	6.8750000000%	$32,707.19	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$32,707.19	$5,334,765.05
IIA9	939336NT6	$1,000,000.00	$166,872.95	1.6250000000%	1.6250000000%	$225.97	$10,935.83	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$11,161.80	$155,937.12
IIA10	939336NU3	$75,265,000.00	$12,559,692.90	4.5000000000%	4.5000000000%	$47,098.85	$823,085.07	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$870,183.91	$11,736,607.83
IIA11	939336NV1	$32,400,000.00	$32,400,000.00	5.7500000000%	5.7500000000%	$155,250.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$155,250.00	$32,400,000.00
IIA12	939336NW9	$1,000,000.00	$1,000,000.00	5.7500000000%	5.7500000000%	$4,791.67	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$4,791.67	$1,000,000.00
IIIA1	939336ML4	$30,059,000.00	$23,354,152.38	5.7500000000%	5.7500000000%	$111,905.31	$97,671.57	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$209,576.88	$23,256,480.81
IIIA2	939336MM2	$2,700,000.00	$2,097,748.16	5.7500000000%	5.7500000000%	$10,051.71	$8,773.19	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$18,824.90	$2,088,974.97
IX	939336MP5	$16,995,171.00	$5,797,125.59	5.2500000000%	5.2500000000%	$25,362.42	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$25,362.42	$5,553,214.54
IIX	939336MQ3	$24,203,277.00	$8,611,395.63	5.7500000000%	5.7500000000%	$41,262.94	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$41,262.94	$8,390,996.06
IIIX	939336MR1	$1,634,175.00	$1,110,635.00	5.7500000000%	5.7500000000%	$5,321.79	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$5,321.79	$1,098,607.54
IP	939336MT7	$67,740.57	$39,240.42	0.0000000000%	0.0000000000%	$0.00	$175.94	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$175.94	$39,064.48
IIP	939336MU4	$301,758.66	$248,480.19	0.0000000000%	0.0000000000%	$0.00	$770.60	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$770.60	$247,709.59
IIIP	939336MV2	$223,250.92	$220,426.28	0.0000000000%	0.0000000000%	$0.00	$272.45	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$272.45	$220,153.83
CB1	939336MX8	$5,804,000.00	$5,676,593.82	5.5859622119%	5.5859622119%	$26,424.37	$11,480.74	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$37,905.10	$5,665,113.08
CB2	939336MY6	$2,764,000.00	$2,703,326.20	5.5859622119%	5.5859622119%	$12,583.90	$5,467.39	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$18,051.29	$2,697,858.81
CB3	939336MZ3	$1,382,000.00	$1,351,663.11	5.5859622119%	5.5859622119%	$6,291.95	$2,733.70	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$9,025.65	$1,348,929.41
CB4	939336NB5	$1,106,000.00	$1,081,721.69	5.5859622119%	5.5859622119%	$5,035.38	$2,187.75	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$7,223.13	$1,079,533.94
CB5	939336NC3	$553,000.00	$540,860.86	5.5859622119%	5.5859622119%	$2,517.69	$1,093.87	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$3,611.56	$539,766.99
CB6	939336ND1	$1,105,879.89	$1,081,604.23	5.5859622119%	5.5859622119%	$5,034.83	$2,187.51	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$7,222.34	$1,079,416.72
R	939336NA7	$100.00	$0.00	0.0000000000%	0.0000000000%	$0.21	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.21	$0.00
R_SYN	XXXXXXXXX	$0.00	$0.00	0.0000000000%	0.0000000000%	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
Total		$552,822,730.04	$234,016,915.28			$1,160,331.25	$5,182,911.57	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$6,343,242.82	$228,834,003.71

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WAMMS.02MS11
Distribution Date: 12/26/2003

Class	Orig Face	Beg Bal	Prin Loss	Prin Reimbursed	Subsequent Recoveries	Deferred Interest	Total Prin	End Cert Pct	End Cert Bal
IA1	$180,542,000.00	$69,149,307.14	$0.00	$0.00	$0.00	$0.00	$2,428,232.19	0.3695598528	$66,721,074.95
IIA1	$130,274,000.00	$21,739,207.25	$0.00	$0.00	$0.00	$0.00	$1,424,654.01	0.1559371267	$20,314,553.24
IIA2	$39,669,000.00	$39,669,000.00	$0.00	$0.00	$0.00	$0.00	$0.00	1.0000000000	$39,669,000.00
IIA3	$3,395,000.00	$3,395,000.00	$0.00	$0.00	$0.00	$0.00	$0.00	1.0000000000	$3,395,000.00
IIA4	$3,000,000.00	$3,000,000.00	$0.00	$0.00	$0.00	$0.00	$0.00	1.0000000000	$3,000,000.00
IIA5	$2,252,000.00	$2,252,000.00	$0.00	$0.00	$0.00	$0.00	$0.00	1.0000000000	$2,252,000.00
IIA6	$4,748,000.00	$4,748,000.00	$0.00	$0.00	$0.00	$0.00	$0.00	1.0000000000	$4,748,000.00
IIA7	$33,211,000.00	$5,542,017.70	$0.00	$0.00	$0.00	$0.00	$363,189.77	0.1559371272	$5,178,827.93
IIA8	$34,211,000.00	$5,708,890.65	$0.00	$0.00	$0.00	$0.00	$0.00	0.1559371269	$5,334,765.05
IIA9	$1,000,000.00	$166,872.95	$0.00	$0.00	$0.00	$0.00	$10,935.83	0.1559371200	$155,937.12
IIA10	$75,265,000.00	$12,559,692.90	$0.00	$0.00	$0.00	$0.00	$823,085.07	0.1559371266	$11,736,607.83
IIA11	$32,400,000.00	$32,400,000.00	$0.00	$0.00	$0.00	$0.00	$0.00	1.0000000000	$32,400,000.00
IIA12	$1,000,000.00	$1,000,000.00	$0.00	$0.00	$0.00	$0.00	$0.00	1.0000000000	$1,000,000.00
IIIA1	$30,059,000.00	$23,354,152.38	$0.00	$0.00	$0.00	$0.00	$97,671.57	0.7736944280	$23,256,480.81
IIIA2	$2,700,000.00	$2,097,748.16	$0.00	$0.00	$0.00	$0.00	$8,773.19	0.7736944333	$2,088,974.97
IX	$16,995,171.00	$5,797,125.59	$0.00	$0.00	$0.00	$0.00	$0.00	0.3267524958	$5,553,214.54
IIX	$24,203,277.00	$8,611,395.63	$0.00	$0.00	$0.00	$0.00	$0.00	0.3466884282	$8,390,996.06
IIIX	$1,634,175.00	$1,110,635.00	$0.00	$0.00	$0.00	$0.00	$0.00	0.6722704362	$1,098,607.54
IP	$67,740.57	$39,240.42	$0.00	$0.00	$0.00	$0.00	$175.94	0.5766777575	$39,064.48
IIP	$301,758.66	$248,480.19	$0.00	$0.00	$0.00	$0.00	$770.60	0.8208864329	$247,709.59
IIIP	$223,250.92	$220,426.28	$0.00	$0.00	$0.00	$0.00	$272.45	0.9861273136	$220,153.83
CB1	$5,804,000.00	$5,676,593.82	$0.00	$0.00	$0.00	$0.00	$11,480.74	0.9760704824	$5,665,113.08
CB2	$2,764,000.00	$2,703,326.20	$0.00	$0.00	$0.00	$0.00	$5,467.39	0.9760704812	$2,697,858.81
CB3	$1,382,000.00	$1,351,663.11	$0.00	$0.00	$0.00	$0.00	$2,733.70	0.9760704848	$1,348,929.41
CB4	$1,106,000.00	$1,081,721.69	$0.00	$0.00	$0.00	$0.00	$2,187.75	0.9760704702	$1,079,533.94
CB5	$553,000.00	$540,860.86	$0.00	$0.00	$0.00	$0.00	$1,093.87	0.9760705063	$539,766.99
CB6	$1,105,879.89	$1,081,604.23	$0.00	$0.00	$0.00	$0.00	$2,187.51	0.9760704845	$1,079,416.72
R	$100.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	0.0000000000	$0.00
R_SYN	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	0.0000000000	$0.00
Total	$552,822,730.04	$234,016,915.28	$0.00	$0.00	$0.00	$0.00	$5,182,911.57	0.4139374003	$228,834,003.71

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WAMMS.02MS11
Distribution Date: 12/26/2003
PER $1000 DENOMINATION
Class	Orig Face	Beg Bal	Prin Loss	Prin Reimbursed	Subsequent Recoveries	Deferred Interest	Total Prin	End Cert Pct	End Cert Bal
IA1	$180,542,000.00	383.00953318	0.00000000	0.00000000	0.00000000	0.00000000	13.44968035	0.3695598528	369.55985283
IIA1	$130,274,000.00	166.87295431	0.00000000	0.00000000	0.00000000	0.00000000	10.93582764	0.1559371267	155.93712667
IIA2	$39,669,000.00	1,000.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	1.0000000000	1,000.00000000
IIA3	$3,395,000.00	1,000.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	1.0000000000	1,000.00000000
IIA4	$3,000,000.00	1,000.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	1.0000000000	1,000.00000000
IIA5	$2,252,000.00	1,000.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	1.0000000000	1,000.00000000
IIA6	$4,748,000.00	1,000.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	1.0000000000	1,000.00000000
IIA7	$33,211,000.00	166.87295474	0.00000000	0.00000000	0.00000000	0.00000000	10.93582759	0.1559371272	155.93712716
IIA8	$34,211,000.00	166.87295461	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.1559371269	155.93712695
IIA9	$1,000,000.00	166.87295000	0.00000000	0.00000000	0.00000000	0.00000000	10.93583000	0.1559371200	155.93712000
IIA10	$75,265,000.00	166.87295423	0.00000000	0.00000000	0.00000000	0.00000000	10.93582768	0.1559371266	155.93712655
IIA11	$32,400,000.00	1,000.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	1.0000000000	1,000.00000000
IIA12	$1,000,000.00	1,000.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	1.0000000000	1,000.00000000
IIIA1	$30,059,000.00	776.94375661	0.00000000	0.00000000	0.00000000	0.00000000	3.24932865	0.7736944280	773.69442796
IIIA2	$2,700,000.00	776.94376296	0.00000000	0.00000000	0.00000000	0.00000000	3.24932963	0.7736944333	773.69443333
IX	$16,995,171.00	341.10428133	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.3267524958	326.75249575
IIX	$24,203,277.00	355.79461533	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.3466884282	346.68842818
IIIX	$1,634,175.00	679.63039454	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.6722704362	672.27043615
IP	$67,740.57	579.27501939	0.00000000	0.00000000	0.00000000	0.00000000	2.59726188	0.5766777575	576.67775751
IIP	$301,758.66	823.44012927	0.00000000	0.00000000	0.00000000	0.00000000	2.55369639	0.8208864329	820.88643289
IIIP	$223,250.92	987.34768932	0.00000000	0.00000000	0.00000000	0.00000000	1.22037571	0.9861273136	986.12731361
CB1	$5,804,000.00	978.04855617	0.00000000	0.00000000	0.00000000	0.00000000	1.97807374	0.9760704824	976.07048243
CB2	$2,764,000.00	978.04855282	0.00000000	0.00000000	0.00000000	0.00000000	1.97807164	0.9760704812	976.07048119
CB3	$1,382,000.00	978.04856006	0.00000000	0.00000000	0.00000000	0.00000000	1.97807525	0.9760704848	976.07048480
CB4	$1,106,000.00	978.04854430	0.00000000	0.00000000	0.00000000	0.00000000	1.97807414	0.9760704702	976.07047016
CB5	$553,000.00	978.04857143	0.00000000	0.00000000	0.00000000	0.00000000	1.97806510	0.9760705063	976.07050633
CB6	$1,105,879.89	978.04855643	0.00000000	0.00000000	0.00000000	0.00000000	1.97807196	0.9760704845	976.07048447
R	$100.00	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.0000000000	0.00000000
R_SYN	$0.00	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.0000000000	0.00000000

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WAMMS.02MS11
Distribution Date: 12/26/2003

Class	Orig Face	Int Rate Accrued	Int Rate Paid	Beg Cert Prin/Not Bal	Curent Int Accrued	Int Shortfall	Unscheduled Int	Int Reimbursed	Total Int Dist
IA1	$180,542,000.00	5.2500000000%	5.2500000000%	$69,149,307.14	$302,528.22	$0.00	$0.00	$0.00	$302,528.22
IIA1	$130,274,000.00	5.7500000000%	5.7500000000%	$21,739,207.25	$104,167.03	$0.00	$0.00	$0.00	$104,167.03
IIA2	$39,669,000.00	5.7500000000%	5.7500000000%	$39,669,000.00	$190,080.63	$0.00	$0.00	$0.00	$190,080.63
IIA3	$3,395,000.00	5.7500000000%	5.7500000000%	$3,395,000.00	$16,267.71	$0.00	$0.00	$0.00	$16,267.71
IIA4	$3,000,000.00	5.7500000000%	5.7500000000%	$3,000,000.00	$14,375.00	$0.00	$0.00	$0.00	$14,375.00
IIA5	$2,252,000.00	5.7500000000%	5.7500000000%	$2,252,000.00	$10,790.83	$0.00	$0.00	$0.00	$10,790.83
IIA6	$4,748,000.00	5.7500000000%	5.7500000000%	$4,748,000.00	$22,750.83	$0.00	$0.00	$0.00	$22,750.83
IIA7	$33,211,000.00	1.6250000000%	1.6250000000%	$5,542,017.70	$7,504.82	$0.00	$0.00	$0.00	$7,504.82
IIA8	$34,211,000.00	6.8750000000%	6.8750000000%	$5,708,890.65	$32,707.19	$0.00	$0.00	$0.00	$32,707.19
IIA9	$1,000,000.00	1.6250000000%	1.6250000000%	$166,872.95	$225.97	$0.00	$0.00	$0.00	$225.97
IIA10	$75,265,000.00	4.5000000000%	4.5000000000%	$12,559,692.90	$47,098.85	$0.00	$0.00	$0.00	$47,098.85
IIA11	$32,400,000.00	5.7500000000%	5.7500000000%	$32,400,000.00	$155,250.00	$0.00	$0.00	$0.00	$155,250.00
IIA12	$1,000,000.00	5.7500000000%	5.7500000000%	$1,000,000.00	$4,791.67	$0.00	$0.00	$0.00	$4,791.67
IIIA1	$30,059,000.00	5.7500000000%	5.7500000000%	$23,354,152.38	$111,905.31	$0.00	$0.00	$0.00	$111,905.31
IIIA2	$2,700,000.00	5.7500000000%	5.7500000000%	$2,097,748.16	$10,051.71	$0.00	$0.00	$0.00	$10,051.71
IX	$16,995,171.00	5.2500000000%	5.2500000000%	$5,797,125.59	$25,362.42	$0.00	$0.00	$0.00	$25,362.42
IIX	$24,203,277.00	5.7500000000%	5.7500000000%	$8,611,395.63	$41,262.94	$0.00	$0.00	$0.00	$41,262.94
IIIX	$1,634,175.00	5.7500000000%	5.7500000000%	$1,110,635.00	$5,321.79	$0.00	$0.00	$0.00	$5,321.79
IP	$67,740.57	0.0000000000%	0.0000000000%	$39,240.42	$0.00	$0.00	$0.00	$0.00	$0.00
IIP	$301,758.66	0.0000000000%	0.0000000000%	$248,480.19	$0.00	$0.00	$0.00	$0.00	$0.00
IIIP	$223,250.92	0.0000000000%	0.0000000000%	$220,426.28	$0.00	$0.00	$0.00	$0.00	$0.00
CB1	$5,804,000.00	5.5859622119%	5.5859622119%	$5,676,593.82	$26,424.37	$0.00	$0.00	$0.00	$26,424.37
CB2	$2,764,000.00	5.5859622119%	5.5859622119%	$2,703,326.20	$12,583.90	$0.00	$0.00	$0.00	$12,583.90
CB3	$1,382,000.00	5.5859622119%	5.5859622119%	$1,351,663.11	$6,291.95	$0.00	$0.00	$0.00	$6,291.95
CB4	$1,106,000.00	5.5859622119%	5.5859622119%	$1,081,721.69	$5,035.38	$0.00	$0.00	$0.00	$5,035.38
CB5	$553,000.00	5.5859622119%	5.5859622119%	$540,860.86	$2,517.69	$0.00	$0.00	$0.00	$2,517.69
CB6	$1,105,879.89	5.5859622119%	5.5859622119%	$1,081,604.23	$5,034.83	$0.00	$0.00	$0.00	$5,034.83
R	$100.00	0.0000000000%	0.0000000000%	$0.00	$0.21	$0.00	$0.00	$0.00	$0.21
R_SYN	$0.00	0.0000000000%	0.0000000000%	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
Total	$552,822,730.04			$234,016,915.28	$1,160,331.25	$0.00	$0.00	$0.00	$1,160,331.25

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WAMMS.02MS11
Distribution Date: 12/26/2003
PER $1000 DENOMINATION
Class	Orig Face	Int Rate Accrued	Int Rate Paid	Beg Cert Prin/Not Bal	Curent Int Accrued	Int Shortfall	Unscheduled Int	Int Reimbursed	Total Int Dist
IA1	$180,542,000.00	5.2500000000%	5.2500000000%	383.00953318	1.67566671	0.00000000	0.00000000	0.00000000	1.67566671
IIA1	$130,274,000.00	5.7500000000%	5.7500000000%	166.87295431	0.79959954	0.00000000	0.00000000	0.00000000	0.79959954
IIA2	$39,669,000.00	5.7500000000%	5.7500000000%	1,000.00000000	4.79166679	0.00000000	0.00000000	0.00000000	4.79166679
IIA3	$3,395,000.00	5.7500000000%	5.7500000000%	1,000.00000000	4.79166716	0.00000000	0.00000000	0.00000000	4.79166716
IIA4	$3,000,000.00	5.7500000000%	5.7500000000%	1,000.00000000	4.79166667	0.00000000	0.00000000	0.00000000	4.79166667
IIA5	$2,252,000.00	5.7500000000%	5.7500000000%	1,000.00000000	4.79166519	0.00000000	0.00000000	0.00000000	4.79166519
IIA6	$4,748,000.00	5.7500000000%	5.7500000000%	1,000.00000000	4.79166596	0.00000000	0.00000000	0.00000000	4.79166596
IIA7	$33,211,000.00	1.6250000000%	1.6250000000%	166.87295474	0.22597392	0.00000000	0.00000000	0.00000000	0.22597392
IIA8	$34,211,000.00	6.8750000000%	6.8750000000%	166.87295461	0.95604309	0.00000000	0.00000000	0.00000000	0.95604309
IIA9	$1,000,000.00	1.6250000000%	1.6250000000%	166.87295000	0.22597000	0.00000000	0.00000000	0.00000000	0.22597000
IIA10	$75,265,000.00	4.5000000000%	4.5000000000%	166.87295423	0.62577360	0.00000000	0.00000000	0.00000000	0.62577360
IIA11	$32,400,000.00	5.7500000000%	5.7500000000%	1,000.00000000	4.79166667	0.00000000	0.00000000	0.00000000	4.79166667
IIA12	$1,000,000.00	5.7500000000%	5.7500000000%	1,000.00000000	4.79167000	0.00000000	0.00000000	0.00000000	4.79167000
IIIA1	$30,059,000.00	5.7500000000%	5.7500000000%	776.94375661	3.72285538	0.00000000	0.00000000	0.00000000	3.72285538
IIIA2	$2,700,000.00	5.7500000000%	5.7500000000%	776.94376296	3.72285556	0.00000000	0.00000000	0.00000000	3.72285556
IX	$16,995,171.00	5.2500000000%	5.2500000000%	341.10428133	1.49233097	0.00000000	0.00000000	0.00000000	1.49233097
IIX	$24,203,277.00	5.7500000000%	5.7500000000%	355.79461533	1.70484931	0.00000000	0.00000000	0.00000000	1.70484931
IIIX	$1,634,175.00	5.7500000000%	5.7500000000%	679.63039454	3.25656065	0.00000000	0.00000000	0.00000000	3.25656065
IP	$67,740.57	0.0000000000%	0.0000000000%	579.27501939	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000
IIP	$301,758.66	0.0000000000%	0.0000000000%	823.44012927	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000
IIIP	$223,250.92	0.0000000000%	0.0000000000%	987.34768932	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000
CB1	$5,804,000.00	5.5859622119%	5.5859622119%	978.04855617	4.55278601	0.00000000	0.00000000	0.00000000	4.55278601
CB2	$2,764,000.00	5.5859622119%	5.5859622119%	978.04855282	4.55278582	0.00000000	0.00000000	0.00000000	4.55278582
CB3	$1,382,000.00	5.5859622119%	5.5859622119%	978.04856006	4.55278582	0.00000000	0.00000000	0.00000000	4.55278582
CB4	$1,106,000.00	5.5859622119%	5.5859622119%	978.04854430	4.55278481	0.00000000	0.00000000	0.00000000	4.55278481
CB5	$553,000.00	5.5859622119%	5.5859622119%	978.04857143	4.55278481	0.00000000	0.00000000	0.00000000	4.55278481
CB6	$1,105,879.89	5.5859622119%	5.5859622119%	978.04855643	4.55278195	0.00000000	0.00000000	0.00000000	4.55278195
R	$100.00	0.0000000000%	0.0000000000%	0.00000000	2.10000000	0.00000000	0.00000000	0.00000000	2.10000000
R_SYN	$0.00	0.0000000000%	0.0000000000%	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
12/2003 DISTRIBUTION REPORT
SERIES: WAMMS 02MS11
WEIGHTED AVERAGE PC RATE: 5.94999%
WEIGHTED AVERAGE MATURITY: 285.74496
WEIGHTED AVERAGE LOAN AGE: 14.53324
POOL NUMBER: Group 1(1987,1988,1989)
ISSUE DATE: 12/23/2002
CERTIFICATE BALANCE AT ISSUE: $552,823,878.69
	TOTAL NUMBER OF MORTAGES	CERTIFICATE ACCOUNT ACTIVITY (@ PCRATE)	CERTIFICATE BALANCE OUTSTANDING
BALANCES FROM LAST FISCAL MONTH-END:	555		$234,016,915.31
PRINCIPAL POOL COLLECTION(S):
Scheduled Principal Collection Due Current Month		$462,857.06
Unscheduled Principal Collection/Reversals		$131,565.92
Liquidations-in-full	11	$4,588,488.59
Subsequent Recoveries		$0.00
Net principal Distributed		$5,182,911.57	-$5,182,911.57

CAPITAL LOSS (PRINCIPAL WRITTEN OFF):			$0.00

BALANCE CURRENT FISCAL MONTH-END:	544		$228,834,003.74

SCHEDULED INTEREST AT MORTGAGE RATE:		$1,217,839.84

UNSCHEDULED INTEREST AT MORTGAGE RATE:
Unscheduled Interest Collection/Reversals		$0.00
Interest Uncollected on Liquidation		$0.00
Interest Uncollected on Non-Earning Assets		$0.00
Net Unscheduled Interest Distributed		$0.00

OTHER:
Loan Conversion Fees		$0.00
Expense Reimbursements		$0.00
Gain on Liquidations		$0.00
Hazard Insurance Premium Refunds		$0.00
Recoveries Carried Forward		$0.00
Net Other Distributions		$0.00

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
12/2003 DISTRIBUTION REPORT
	TOTAL NUMBER OF MORTAGES	CERTIFICATE ACCOUNT ACTIVITY (@ PCRATE)	CERTIFICATE BALANCE OUTSTANDING
SCHEDULED SERVICING FEE EXPENSES:		$57,508.59

UNSCHEDULED SERVICING FEES:
Unscheduled Service Fee Collections/Reversals		$0.00
Servicing Fees Uncollected on Liquidation		$0.00
Servicing Fees Uncollected/Non-Earning Assets		$0.00
Net Unscheduled Service Fees Distributed		$0.00

MISCELLANEOUS EXPENSES:		$0.00

NET FUNDS DISTRIBUTED:		$6,343,242.82

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
12/2003 DISTRIBUTION REPORT
SERIES: WAMMS 02MS11
WEIGHTED AVERAGE PC RATE: 5.66258%
WEIGHTED AVERAGE MATURITY: 162.13155
WEIGHTED AVERAGE LOAN AGE: 14.66438
POOL NUMBER: 1987
ISSUE DATE: 12/23/2002
CERTIFICATE BALANCE AT ISSUE: $184,862,771.59
	TOTAL NUMBER OF MORTAGES	CERTIFICATE ACCOUNT ACTIVITY (@ PCRATE)	CERTIFICATE BALANCE OUTSTANDING
BALANCES FROM LAST FISCAL MONTH-END:	173		$73,268,419.95
PRINCIPAL POOL COLLECTION(S):
Scheduled Principal Collection Due Current Month		$294,600.39
Unscheduled Principal Collection/Reversals		$29,403.16
Liquidations-in-full	4	$2,120,808.90
Subsequent Recoveries		$0.00
Net principal Distributed		$2,444,812.45	-$2,444,812.45

CAPITAL LOSS (PRINCIPAL WRITTEN OFF):			$0.00

BALANCE CURRENT FISCAL MONTH-END:	169		$70,823,607.50

SCHEDULED INTEREST AT MORTGAGE RATE:		$363,708.78

UNSCHEDULED INTEREST AT MORTGAGE RATE:
Unscheduled Interest Collection/Reversals		$0.00
Interest Uncollected on Liquidation		$0.00
Interest Uncollected on Non-Earning Assets		$0.00
Net Unscheduled Interest Distributed		$0.00

OTHER:
Loan Conversion Fees		$0.00
Expense Reimbursements		$0.00
Gain on Liquidations		$0.00
Hazard Insurance Premium Refunds		$0.00
Recoveries Carried Forward		$0.00
Net Other Distributions		$0.00

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
12/2003 DISTRIBUTION REPORT
	TOTAL NUMBER OF MORTAGES	CERTIFICATE ACCOUNT ACTIVITY (@ PCRATE)	CERTIFICATE BALANCE OUTSTANDING
SCHEDULED SERVICING FEE EXPENSES:		$17,968.69

UNSCHEDULED SERVICING FEES:
Unscheduled Service Fee Collections/Reversals		$0.00
Servicing Fees Uncollected on Liquidation		$0.00
Servicing Fees Uncollected/Non-Earning Assets		$0.00
Net Unscheduled Service Fees Distributed		$0.00

MISCELLANEOUS EXPENSES:		$0.00

NET FUNDS DISTRIBUTED:		$2,790,552.54

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
12/2003 DISTRIBUTION REPORT
SERIES: WAMMS 02MS11
WEIGHTED AVERAGE PC RATE: 6.10801%
WEIGHTED AVERAGE MATURITY: 340.57869
WEIGHTED AVERAGE LOAN AGE: 14.58806
POOL NUMBER: 1988
ISSUE DATE: 12/23/2002
CERTIFICATE BALANCE AT ISSUE: $334,203,303.25
	TOTAL NUMBER OF MORTAGES	CERTIFICATE ACCOUNT ACTIVITY (@ PCRATE)	CERTIFICATE BALANCE OUTSTANDING
BALANCES FROM LAST FISCAL MONTH-END:	317		$134,315,229.45
PRINCIPAL POOL COLLECTION(S):
Scheduled Principal Collection Due Current Month		$140,701.92
Unscheduled Principal Collection/Reversals		$95,896.76
Liquidations-in-full	6	$2,393,990.55
Subsequent Recoveries		$0.00
Net principal Distributed		$2,630,589.23	-$2,630,589.23

CAPITAL LOSS (PRINCIPAL WRITTEN OFF):			$0.00

BALANCE CURRENT FISCAL MONTH-END:	311		$131,684,640.22

SCHEDULED INTEREST AT MORTGAGE RATE:		$716,597.74

UNSCHEDULED INTEREST AT MORTGAGE RATE:
Unscheduled Interest Collection/Reversals		$0.00
Interest Uncollected on Liquidation		$0.00
Interest Uncollected on Non-Earning Assets		$0.00
Net Unscheduled Interest Distributed		$0.00

OTHER:
Loan Conversion Fees		$0.00
Expense Reimbursements		$0.00
Gain on Liquidations		$0.00
Hazard Insurance Premium Refunds		$0.00
Recoveries Carried Forward		$0.00
Net Other Distributions		$0.00

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
12/2003 DISTRIBUTION REPORT
	TOTAL NUMBER OF MORTAGES	CERTIFICATE ACCOUNT ACTIVITY (@ PCRATE)	CERTIFICATE BALANCE OUTSTANDING
SCHEDULED SERVICING FEE EXPENSES:		$32,931.58

UNSCHEDULED SERVICING FEES:
Unscheduled Service Fee Collections/Reversals		$0.00
Servicing Fees Uncollected on Liquidation		$0.00
Servicing Fees Uncollected/Non-Earning Assets		$0.00
Net Unscheduled Service Fees Distributed		$0.00

MISCELLANEOUS EXPENSES:		$0.00

NET FUNDS DISTRIBUTED:		$3,314,255.39

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
12/2003 DISTRIBUTION REPORT
SERIES: WAMMS 02MS11
WEIGHTED AVERAGE PC RATE: 5.94365%
WEIGHTED AVERAGE MATURITY: 344.01442
WEIGHTED AVERAGE LOAN AGE: 13.90620
POOL NUMBER: 1989
ISSUE DATE: 12/23/2002
CERTIFICATE BALANCE AT ISSUE: $33,757,803.85
	TOTAL NUMBER OF MORTAGES	CERTIFICATE ACCOUNT ACTIVITY (@ PCRATE)	CERTIFICATE BALANCE OUTSTANDING
BALANCES FROM LAST FISCAL MONTH-END:	65		$26,433,265.91
PRINCIPAL POOL COLLECTION(S):
Scheduled Principal Collection Due Current Month		$27,554.75
Unscheduled Principal Collection/Reversals		$6,266.00
Liquidations-in-full	1	$73,689.14
Subsequent Recoveries		$0.00
Net principal Distributed		$107,509.89	-$107,509.89

CAPITAL LOSS (PRINCIPAL WRITTEN OFF):			$0.00

BALANCE CURRENT FISCAL MONTH-END:	64		$26,325,756.02

SCHEDULED INTEREST AT MORTGAGE RATE:		$137,533.32

UNSCHEDULED INTEREST AT MORTGAGE RATE:
Unscheduled Interest Collection/Reversals		$0.00
Interest Uncollected on Liquidation		$0.00
Interest Uncollected on Non-Earning Assets		$0.00
Net Unscheduled Interest Distributed		$0.00

OTHER:
Loan Conversion Fees		$0.00
Expense Reimbursements		$0.00
Gain on Liquidations		$0.00
Hazard Insurance Premium Refunds		$0.00
Recoveries Carried Forward		$0.00
Net Other Distributions		$0.00

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
12/2003 DISTRIBUTION REPORT
	TOTAL NUMBER OF MORTAGES	CERTIFICATE ACCOUNT ACTIVITY (@ PCRATE)	CERTIFICATE BALANCE OUTSTANDING
SCHEDULED SERVICING FEE EXPENSES:		$6,608.32

UNSCHEDULED SERVICING FEES:
Unscheduled Service Fee Collections/Reversals		$0.00
Servicing Fees Uncollected on Liquidation		$0.00
Servicing Fees Uncollected/Non-Earning Assets		$0.00
Net Unscheduled Service Fees Distributed		$0.00

MISCELLANEOUS EXPENSES:		$0.00

NET FUNDS DISTRIBUTED:		$238,434.89

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
12/2003 DISTRIBUTION REPORT
SERIES: WAMMS 02MS11
WEIGHTED AVERAGE PC RATE: 5.94999%
WEIGHTED AVERAGE MATURITY: 285.74496
WEIGHTED AVERAGE LOAN AGE: 14.53324
POOL NUMBER: ALL
ISSUE DATE: 12/23/2002
CERTIFICATE BALANCE AT ISSUE: $552,823,878.69
	TOTAL NUMBER OF MORTAGES	CERTIFICATE ACCOUNT ACTIVITY (@ PCRATE)	CERTIFICATE BALANCE OUTSTANDING
BALANCES FROM LAST FISCAL MONTH-END:	555		$234,016,915.31
PRINCIPAL POOL COLLECTION(S):
Scheduled Principal Collection Due Current Month		$462,857.06
Unscheduled Principal Collection/Reversals		$131,565.92
Liquidations-in-full	11	$4,588,488.59
Subsequent Recoveries		$0.00
Net principal Distributed		$5,182,911.57	-$5,182,911.57

CAPITAL LOSS (PRINCIPAL WRITTEN OFF):			$0.00

BALANCE CURRENT FISCAL MONTH-END:	544		$228,834,003.74

SCHEDULED INTEREST AT MORTGAGE RATE:		$1,217,839.84

UNSCHEDULED INTEREST AT MORTGAGE RATE:
Unscheduled Interest Collection/Reversals		$0.00
Interest Uncollected on Liquidation		$0.00
Interest Uncollected on Non-Earning Assets		$0.00
Net Unscheduled Interest Distributed		$0.00

OTHER:
Loan Conversion Fees		$0.00
Expense Reimbursements		$0.00
Gain on Liquidations		$0.00
Hazard Insurance Premium Refunds		$0.00
Recoveries Carried Forward		$0.00
Net Other Distributions		$0.00

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
12/2003 DISTRIBUTION REPORT
	TOTAL NUMBER OF MORTAGES	CERTIFICATE ACCOUNT ACTIVITY (@ PCRATE)	CERTIFICATE BALANCE OUTSTANDING
SCHEDULED SERVICING FEE EXPENSES:		$57,508.59

UNSCHEDULED SERVICING FEES:
Unscheduled Service Fee Collections/Reversals		$0.00
Servicing Fees Uncollected on Liquidation		$0.00
Servicing Fees Uncollected/Non-Earning Assets		$0.00
Net Unscheduled Service Fees Distributed		$0.00

MISCELLANEOUS EXPENSES:		$0.00

NET FUNDS DISTRIBUTED:		$6,343,242.82

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WAMMS.02MS11
Distribution Date: 12/26/2003

Distribution by Group
Pool ID		Principal		Interest		Total
Group 1(1987,1988,1989)		$5,182,911.57		$1,160,331.25		$6,343,242.82
Pool - 1987		$2,444,812.45		$345,740.09		$2,790,552.54
Pool - 1988		$2,630,589.23		$683,666.16		$3,314,255.39
Pool - 1989		$107,509.89		$130,925.00		$238,434.89
Aggregate		$5,182,911.57		$1,160,331.25		$6,343,242.82

Number of Loans and Aggregate Principal Balance By Group
Pool ID	Beg Bal	Beg Count	Paid Off / Liq Count	Rem Count	Sched Prin End Bal	Sched Prin	Prin PrePay / Liq	Unsched Prin / Rev	Total Prin
Group 1(1987,1988,1989)	$234,016,915.31	555	11	544	$228,834,003.74	$462,857.06	$4,588,488.59	$131,565.92	$5,182,911.57
Pool - 1987	$73,268,419.95	173	4	169	$70,823,607.50	$294,600.39	$2,120,808.90	$29,403.16	$2,444,812.45
Pool - 1988	$134,315,229.45	317	6	311	$131,684,640.22	$140,701.92	$2,393,990.55	$95,896.76	$2,630,589.23
Pool - 1989	$26,433,265.91	65	1	64	$26,325,756.02	$27,554.75	$73,689.14	$6,266.00	$107,509.89
Aggregate	$234,016,915.31	555	11	544	$228,834,003.74	$462,857.06	$4,588,488.59	$131,565.92	$5,182,911.57

Delinquency Information by Group
Pool ID	1 Month Count	Sched End Balance	2 Months Count	Sched End Balance	3 Months Count	Sched End Balance	4 Months Count	Sched End Balance
Group 1(1987,1988,1989)	5	$1,468,061.06	1	$455,032.55	0	$0.00	0	$0.00
Pool - 1987	2	$502,850.63	0	$0.00	0	$0.00	0	$0.00
Pool - 1988	3	$965,210.43	0	$0.00	0	$0.00	0	$0.00
Pool - 1989	0	$0.00	1	$455,032.55	0	$0.00	0	$0.00
Aggregate	5	$1,468,061.06	1	$455,032.55	0	$0.00	0	$0.00

Foreclosure and REO Information by Group
Pool ID		Foreclosure Count		Sched End Balance		REO Count		Sched End Balance
Group 1(1987,1988,1989)		0		$0.00		0		$0.00
Pool - 1987		0		$0.00		0		$0.00
Pool - 1988		0		$0.00		0		$0.00
Pool - 1989		0		$0.00		0		$0.00
Aggregate		0		$0.00		0		$0.00

Aggregate Loss Amounts by Group
Pool ID			Count			Loss Amount
Group 1(1987,1988,1989)			0			$0.00
Aggregate			0			$0.00

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WAMMS.02MS11
Distribution Date: 12/26/2003

INSURANCE RESERVES - Group 1(1987,1988,1989)
Insurance Type	Original Balance	Claims In Progress	Claims Paid	Coverage Adjustments	Coverage Remaining
MPI	$0.00	$0.00	$0.00	$0.00	$0.00
Special Hazard	$5,528,227.00	$0.00	$0.00	$0.00	$5,528,227.00
Bankruptcy Bond
Single-Units	$100,000.00	$0.00	$0.00	$0.00	$100,000.00
Multi-Units	$0.00	$0.00	$0.00	$0.00	$0.00
Mortgage Repurchase	$5,528,227.00	$0.00	$0.00	$0.00	$5,528,227.00

INSURANCE RESERVES - Aggregate
Insurance Type	Original Balance	Claims In Progress	Claims Paid	Coverage Adjustments	Coverage Remaining
MPI	$0.00	$0.00	$0.00	$0.00	$0.00
Special Hazard	$5,528,227.00	$0.00	$0.00	$0.00	$5,528,227.00
Bankruptcy Bond
Single-Units	$100,000.00	$0.00	$0.00	$0.00	$100,000.00
Multi-Units	$0.00	$0.00	$0.00	$0.00	$0.00
Mortgage Repurchase	$5,528,227.00	$0.00	$0.00	$0.00	$5,528,227.00

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WAMMS.02MS11
Distribution Date: 12/26/2003

The Group C-B Certificates provide, to the limited extent described in the Prospectus Supplement, credit support, as well as special hazard, bankruptcy, and fraud coverage to certain Certificates. The "Prospectus Supplement" is that certain Prospectus Supplement, dated December 19, 2002 to that certain Prospectus Supplement, dated November 21, 2002, to which certain certificates were offered. The special hazard, bankruptcy, and Fraud coverage (collectively, "Credit Enhancements") provided by the C-B certificates provide coverage to the Loans, subject to the conditions and limitations to payment specified thereunder.



The Class Principal Balances of each Class of the Class CB1,CB2,CB3,CB4,CB5,CB6 Certificatesimmediately after the principal and interest distribution on 200312 are as follows:

Class			Class Principal Balance
CB1			$5,665,113.08
CB2			$2,697,858.81
CB3			$1,348,929.41
CB4			$1,079,533.94
CB5			$539,766.99
CB6			$1,079,416.72
Total			$12,410,618.95
Capitalized items used but not defined herein have the meanings ascribed to them in the Prospectus Supplement.
The amount of the special hazard coverage, bankruptcy coverage, and fraud coverage, as of the above referenced distribution date, is $5,528,227.00, $100,000.00, $5,528,227.00 respectively, and such coverages are referred to in the table above under the column "Insurance Type" as "special hazard," "bankruptcy bond," and "mortgage repurchase," respectively. However, no policy of insurance exists for any such coverage, notwithstanding the reference to "insurance."

WASHINGTON MUTUAL MSC MORT PAS THR CERT SER 2002 MS11 8-K