Appendix Table 3. International Classification of Diseases, Ninth Revision (ICD-9), Diagnostic Code Clusters for Morbidity Assessment in Ambulatory Care

No.	Diagnostic/Process Cluster	ICD-9 Codes to Include
No.	Diagnostic/Process Cluster	From	To
1	Hernia (external abdominal)	550
		551.0	551.2
		552.0	552.2
		553.0	553.2
2	Abdominal pain	789
3	Acne, diseases of sweat and sebaceous glands	695.3
		705	705.9
		706.0	706.9
4	Intestinal infectious diseases/scute gastroenteritis	001	005.9
		006.0	006.2
		007	009
		558.9
5	Acute sprains, strains	840	848.9
6	Adverse effects of medicinal agents	960	979.9
		995	995.2
		995.4
7	Alcohol and drug abuse	291	292.9
		303	305.8
		571.0	571.3
		648.3
8	Allergic reaction	995.3
9	Allergy treatment/desensitization	V07.1
9	Allergy treatment/desensitization	V72.7
10	Iron deficiency and other deficiency anemias	280	281.9
11	Arrhythmia	427	427.9
11	Arrhythmia	785.0
12	Asthma	493	493.9
13	Breast lump	611.72
14	Burns	940	949.9
15	Bursitis, dynovitis, tenosynovitis	726
		727.00	727.01
		727.04	727.9
		727.2	727.3
16	Cataract, aphakia	366	366.9
		379.3x
		743.3x
		998.82
		V45.61
17	Cerebral vascular disease/CVA	430	438.9
18	Chest pain	786.5x
19	Heart failure	428	428.9x
20	Conjunctivitis, keratitis	053.21
		054.42	054.43
		077	077.9x
		130.1
		370	370.9
		372	372.3x
21	Contraception	v25.0	v25.9
22	COPD/chronic bronchitis	491	492.9
		494	494.9
		496	496.9
23	Deafness	387	387.9
		388.2
		389	389.9
24	Degenerative joint disease	715	717.x
25	Depression, anxiety, neuroses (nonpsychotic)	300.0
		300.4
		300.5
		306
		308	309
		311
		313
		799.2
26	Dermatitis and eczema	690	693.9
		698.2	698.4
		706.3
27	Dermatophytosis	110	111.9
28	Diabetes mellitus	250
28	Diabetes mellitus	648.0
29	Diaphragmatic hernia	551.3
		552.3
		553.3
30	Disease of hair and hair follicles	704	704.9
31	Diverticular disease	562
32	Thrombophlebitis, pulmonary embolism	415.1
		451
		453
		673
		V12.51	V12.52
33	Impacted cerumen (wax in ear)	380.4
34	Enlarged tonsils	474
35	Fibrocystic breast disease	610
36	Fibrositis and myalgia	719.4	719.5
		729.0	729.1
		729.4	729.5
37	Foreign body in eye	930	930.9
37	Foreign body in eye	360.5x	360.6
38	Fractures and dislocations	800	839.9
39	Ganglion	727.4x
40	Gall bladder and biliary tract diseases	574	576.9
41	Glaucoma	365
42	Gout	274
43	Headache	339
		346
		784
		307.81
44	Hematuria	599.7x
45	Helminthiasis, scabies, lice	120	129.9
45	Helminthiasis, scabies, lice	132	133.9
46	Hemorrhoids/perirectal disease	455	455.9
		565	566.9
		569	569.4
47	Hepatitis/mononucleosis	070
		075
		573.3
48	Hyperlipidemia	272	272.4
49	Hypertension	401	405.9
		437.2
		796.2
50	Infections of eyelid	373	373.2
50	Infections of eyelid	373.4	373.6
51	Infertility	606
		628
		v26.0	v26.2
		v26.8	v26.9
52	Irritable bowel syndrome	564.1
52	Irritable bowel syndrome	564.5
53	Ischemic heart disease	410	414.9
		429.7
		V45.81
		V45.82
54	Keratoses	702.0	702.1
55	Lacerations/contusions	530.7
		618.7
		620.6
		622.3
		623.4
		624.4
		664
		665.3x	665.4
		800.1x
		800.6x
		801.1x
		801.6x
		803.1x
		803.6x
		804.1x
		804.6x
		851
		861
		865	866
		870	887.x
		890
		891	897.x
		900	904.x
		910	929.x
		950	957.x
		959.x
		998.2
56	Low back pain	720
		721.3
		721.42
		722.10
		722.52
		724.02
		724.2	724.3
		724.6	724.7
57	Lymphadenopathy	785.6
58	Medical and surgical aftercare	V51.0	V55
		V58.7	V58.9
		V67.0	V67.9
59	Menopausal symptoms	256.3x
		627.2
		627.4	627.9
60	Menstrual disorders	625.3	625.4
60	Menstrual disorders	626	627.1
61	Neoplasm, malignant, involving skin	172	173.9
61	Neoplasm, malignant, involving skin	232	232.9
62	Neoplasm, malignant, not involving skin	140	165.9
		170	171.9
		174	176.9x
		179	209.x
		230	231.9
		233	234.9
63	Neoplasm, benign	210	229.9
63	Neoplasm, benign	235	239.9
64	Nonfungal skin infections	607.1	607.2
64	Nonfungal skin infections	680	686.9
65	Obesity	278
66	Otitis externa	380.1	380.2
67	Otitis media	381	381.4
		382	382.9
		384	384.1
		388.7
		385.1
68	Parkinson's disease	332.x
69	Peptic diseases	530.1	530.2
		531	535.9
		530.81
70	Peripheral neuropathy	354	355.9
		356.1	356.4
		357	357.9
71	Peripheral vascular disease	440.2	440.4
71	Peripheral vascular disease	443.x
72	Personality disorders	301	301.9
73	Pregnancy and abortion	630.x	633x
		634.x	639.9
		640	646.4
		646.7	646.9
		650	666.x
		670	677.x
		v22.0	v24.9
74	Prostatitis and benign prostatic hypertrophy	600.0	601.9
75	Psoriasis/pityriasis	696	696.9
76	Psychosocial problem	v60.0	v62.9
77	Refractive errors	367.0	367.9
78	Renal calculi	592.0	592.9
79	Respiratory tract infection, acute upper	032.0	034.9
		460	460.9
		462	465.9
		475	475.9
		487.1	487.9
		519.8
80	Respiratory tract infection, acute lower	466	466.9
		480	488
		490	490.9
81	Rheumatoid diseases	714	714.9
82	Rhinitis, chronic	472.0
		472.2
		477	477.9
83	Routine health maintenance	V01.0	V07.0
		V07.2	V07.9
		V20.0	V21.9
		V28.0	V28.9
		V30.0	V37.9
		V39.0	V39.9
		V65.5
		V70.0	V72.6
		V72.8	V82.9
84	Schizophrenia and affective psychosis	295	298.9
85	Scoliosis/kyphosis	737	737.9
86	Seizure disorder	345	345.9
		780.3
		779.0
87	Sexually transmitted diseases	054.1
		090	99.9
		112.1	112.2
		608
		614	614.99
		616.x
88	Sinusitis	461	461.9
88	Sinusitis	473	473.9
89	Skin ulcer	707	707.9
90	Strabismus	378	378.9
91	Thyroid disease	240	246.9
91	Thyroid disease	648.1
92	Urethral stricture	598	598.9
92	Urethral stricture	753.6
93	Urinary tract infection	590	590.9
		595	595.9
		599.0
		646.5	646.6
		771.82
		V13.02
94	Urticaria	708	708.9
94	Urticaria	995.1
95	Uterine prolapse	618.1	618.4
96	Vaginitis	112.1
		131.00	131.01
		616.1
		623.5
		627.3
97	Valvular heart disease	391.1
		391.9
		394	397.9
		424	424.9
98	Varicose veins	454	454.9
99	Vertiginous syndromes	386	386.9
99	Vertiginous syndromes	780.4
100	Viral exanthem	051	059.x
100	Viral exanthem	74.3
101	Warts	78.1
102	Chronic kidney disease	403	404.x
		581	582.x
		585	586
		V42.0
		V45.11	V45.12
		V56.xx
103	Abdominal aortic aneurysm	441.xx

COPD, chronic obstructive pulmonary disorder; CVA, cerebrovascular accident.