International Classification of Disease (ICD) Codes

About ICD Codes

NCHS 50 Leading (Rankable) Causes of Death
NCHS 113 Causes of Death
NCHS 39 Causes of Death
About Injury ICD Codes

Notes
References

About ICD Codes

ICD Stands for International Classification of Diseases. It is a coding system maintained by the World Health Organization and the U.S. National Center for Health Statistics used to classify causes of death on death certificates and diagnoses, injury causes, and medical procedures for hospital and emergency department visits. These codes are updated every decade or so to account for advances in medical technology. The U.S. has been using the 10th revision (ICD-10) to code causes of death since 1999. The 10th revision of the clinical modification (ICD-10-CM) has been in use for hospital, emergency department, and physician visits starting in October 2015. (1)
There are various versions of the ICD lists. The most commonly used in public health assessment is the ICD code list for underlying causes of death. Selected versions include:

ICD-10 for underlying causes of mortality
ICD-10CM (Clinical Modification) for inpatient, outpatient, and physician office visit diagnoses
ICD-O (Oncology) for cancer diagnoses
ICD-PCS codes for medical procedures

There are hundreds of individual, specific ICD codes. In order to provide a consistent standard for ranking causes of death the NCHS (National Center for Health Statistics) prepared a list of 113 selected causes of death. The NCHS 50 leading causes of death are taken from the list of 113. The 39 selected causes is a separate list for use with small populations. On this page, you'll find all three sets of standard ICD-10 mortality code groupings. Certain other standard groupings of ICD-10 mortality codes, such as the 130 causes of infant mortality, injury mechanism and intent, and drug and alcohol induced deaths, are also commonly used.

For more information about the NCHS cause of death rankings see National Vital Statistics Reports; vol 70 no 9 on the NCHS website.

For information specific to injury ICD codes, visit the IBIS help page on Injury ICD Codes.

Use the "Contents" section at the top to jump to each or the three lists of ICD codes.

NCHS 50 Leading (Rankable) Causes of Death

The NCHS 50 leading causes of death are also known as the 50 rankable causes of death. The list actually includes 52 causes because two causes (COVID-19 and Enterocolitis due to Clostridium difficile) were added in recent years to support surveillance activities when those causes became a concern. ICD-10 was implemented in 1999 for underlying cause of death.

Condition		ICD-9 Codes	ICD-10 Codes
1	Salmonella infections	002-003	A01-A02
2	Shigellosis and amebiasis	004, 006	A03, A06
3	Tuberculosis(see note 1)	010-018	A15-A19
4	Whooping cough	033	A37
5	Scarlet fever and erysipelas	034.1 - 035	A38, A46
6	Meningococcal infection	036	A39
7	Septicemia	038	A40-A41
8	Syphilis	090-097	A50-A53
9	Poliomyelitis, acute	045	A80
10	Arthropod-borne viral encephalitis	062-064	A83-A84, A85.2
11	Measles	055	B05
12	Viral hepatitis	070	B15-B19
13	Human immunodeficiency virus (HIV) disease	042-044	B20-B24
14	Malaria	084	B50-B54
15	Neoplasm, malignant	140-208	C00-C97
16	Neoplasm, In situ, benign and of uncertain or unknown behavior	210-239	D00-D48
17	Anemias	280-285	D50-D64
18	Diabetes mellitus	250	E10-E14
19	Nutritional deficiencies	260-269	E40-E64
20	Meningitis	320-322	G00, G03
21	Parkinson's disease	332	G20-G21
22	Alzheimer's disease	331.0	G30
23	Heart disease	390-398, 402, 404, 410-429	I00-I09, I11, I13, I20-I51
24	Essential hypertension and hypertensive renal disease	401, 403	I10, I12
25	Cerebrovascular diseases	430-434, 436-438	I60-I69
26	Atherosclerosis	440	I70
27	Aortic aneurysm and dissection	441	I71
28	Influenza and pneumonia(see note 2)	480-487	J09-J18
29	Bronchitis and bronchiolitis, acute	466	J20-J21
30	Chronic lower respiratory diseases	490-494, 496	J40-J47
31	Pneumoconioses and chemical effects	500-506	J60-J66, J68
32	Pneumonitis due to solids and liquids	507	J69
33	Peptic ulcer	531-534	K25-K28
34	Diseases of appendix	540-543	K35-K38
35	Hernia	550-553	K40-K46
36	Chronic liver disease and cirrhosis	571	K70, K73-K74
37	Cholelithiasis and other disorders of gallbladder	574-575	K80-K82
38	Nephritis, nephrotic syndrome and nephrosis	580-589	N00-N07, N17-N19, N25-N27
39	Infections of kidney	590	N10-N12, N13.6, N15.1
40	Hyperplasia of prostate	600	N40
41	Inflammatory diseases of female pelvic organs	614-616	N70-N76
42	Pregnancy, childbirth and the puerperium	630-676	O00-O99
43	Certain conditions originating in the perinatal period	760-771.2, 771.4-779	P00-P96
44	Congenital malformations, deformations and chromosomal abnormalities	740-759	Q00-Q99
	45-50: Please see ICD9 and ICD10 injury matrices for injury codes.
51	Enterocolitis due to Clostridium difficile(see note 3)	008.45	A04.7
52	COVID-19(see note 4)	n/a	U07.1
95	Causes other than NCHS 50 leading causes

NCHS 113 Causes of Death

Condition		ICD-9 Codes	ICD-10 Codes
1	Salmonella infections	002-003	A01-A02
2	Shigellosis and amebiasis	004, 006	A03, A06
3	Certain other intestinal infections	007-009	A04, A07-A09
4	Respiratory tuberculosis(see note 1)	010-012	A15
5	Other tuberculosis	013-018	A17-A19
6	Whooping cough	033	A37
7	Scarlet fever and erysipelas	034.1-035	A38, A46
8	Meningococcal infection	036	A39
9	Septicemia	038	A40-A41
10	Syphilis	090-097	A50-A53
11	Acute poliomyelitis	045	A80
12	Arthropod-borne viral encephalitis	062-064	A83-A84, A85.2
13	Measles	055	B05
14	Viral hepatitis	070	B15-B19
15	Human immunodeficiency virus (HIV) disease	042-044	B20-B24
16	Malaria	084	B50-B54
17	Other and unspecified infectious and parasitic diseases and their sequelae	001, 005, 020-032, 037, 039-041, 046-054, 056-061, 065-066, 071-083, 085-088, 098-134, 136-139, 771.3	A00, A05, A20-A36, A42-A44, A48-A49, A54-A79, A81-A82, A85.0-A85.1, A85.8, A86-B04, B06-B09, B25-B49, B55-B99
18	Malignant neoplasms of lip, oral cavity and pharynx	140-149	C00-C14
19	Malignant neoplasm of esophagus	150	C15
20	Malignant neoplasm of stomach	151	C16
21	Malignant neoplasms of colon, rectum and anus	153-154	C18-C21
22	Malignant neoplasms of liver and intrahepatic bile ducts	155	C22
23	Malignant neoplasm of pancreas	157	C25
24	Malignant neoplasm of larynx	161	C32
25	Malignant neoplasms of trachea, bronchus and lung	162	C33-C34
26	Malignant melanoma of skin	172	C43
27	Malignant neoplasm of breast	174-175	C50
28	Malignant neoplasm of cervix uteri	180	C53
29	Malignant neoplasms of corpus uteri and uterus, part unspecified	179, 182	C54-C55
30	Malignant neoplasm of ovary	183.0	C56
31	Malignant neoplasm of prostate	185	C61
32	Malignant neoplasms of kidney and renal pelvis	189.0, 189.1	C64-C65
33	Malignant neoplasm of bladder	188	C67
34	Malignant neoplasms of meninges, brain and other parts of central nervous system	191-192	C70-C72
35	Hodgkin's disease	201	C81
36	Non-Hodgkin's lymphoma	200, 202	C82-C85
37	Leukemia	204-208	C91-C95
38	Multiple myeloma and immunoproliferative neoplasms	203	C88, C90
39	Other and unspecified malignant neoplasms of lymphoid, hematopoietic and related tissue	---	C96
40	All other and unspecified malignant neoplasms	152, 156, 158-160, 163-171, 173, 181, 183.2-184, 186-187, 189.2-190, 193-199	C17, C23-C24, C26-C31, C37-C41, C44-C49, C51-C52, C57-C60, C62-C63, C66, C68-C69, C73-C80, C97
41	In situ neoplasms, benign neoplasms and neoplasms of uncertain or unknown behavior	210-239	D00-D48
42	Anemias	280-285	D50-D64
43	Diabetes mellitus	250	E10-E14
44	Malnutrition	260-263	E40-E46
45	Other nutritional deficiencies	264-269	E50-E64
46	Meningitis	320-322	G00, G03
47	Parkinson's disease	332	G20-G21
48	Alzheimer's disease	331.0	G30
49	Acute rheumatic fever and chronic rheumatic heart diseases	390-398	I00-I09
50	Hypertensive heart disease	402	I11
51	Hypertensive heart and renal disease	404	I13
52	Acute myocardial infarction	410	I21-122
53	Other acute ischemic heart diseases	411	I24
54	Atherosclerotic cardiovascular disease, so described	429.2	I25.0
55	All other forms of chronic ischemic heart disease	412-414	I20, I25.1-I25.9
56	Acute and subacute endocarditis	421	I33
57	Diseases of pericardium and acute myocarditis	420, 422-423	I30-131, I40
58	Heart failure	428	I50
59	All other forms of heart disease	415-417, 424-427, 429.0-429.1, 429.3-429.9	I26-128, I34-138, I42-149, I51
60	Essential hypertension and hypertensive renal disease	401, 403	I10, I12
61	Cerebrovascular diseases	430-434, 436-438	I60-169
62	Atherosclerosis	440	I70
63	Aortic aneurysm and dissection	441	I71
64	Other diseases of arteries, arterioles and capillaries	442-448	I72-178
65	Other disorders of circulatory system	451-459	I80-I99
66	Influenza(see note 2)	487	J09-J11
67	Pneumonia	480-486	J12-J18
68	Acute bronchitis and bronchiolitis	466	J20-J21
69	Other and unspecified acute lower respiratory infections(see note 5)	490-491	J22, U04
70	Bronchitis, chronic and unspecified	490-491	J40-J42
71	Emphysema	492	J43
72	Asthma	493	J45-J46
73	Other chronic lower respiratory diseases	494, 496	J44, J47
74	Pneumoconioses and chemical effects	500-506	J60-J66, J68
75	Pneumonitis due to solids and liquids	507	J69
76	Other diseases of respiratory system	034.0, 460-465, 470-478, 495, 508-519	J00-J06, J30-J39, J67, J70-J98
77	Peptic ulcer	531-534	K25-K28
78	Diseases of appendix	540-543	K35-K38
79	Hernia	550-553	K40-K46
80	Alcoholic liver disease	571.0-571.3	K70
81	Other chronic liver disease and cirrhosis	571.4-571.9	K73-K74
82	Cholelithiasis and other disorders of gallbladder	574-575	K80-K82
83	Acute and rapidly progressive nephritic and nephrotic syndrome	580-581	N00-N01, N04
84	Chronic glomerulonephritis, nephritis and nephropathy not specified as acute or chronic, and renal sclerosis unspecified	582-583, 587	N02-N03, N05-N07, N26
85	Renal failure	584-586	N17-N19
86	Other disorders of kidney	588-589	N25, N27
87	Infections of kidney	590	Nl0-N12, N13.6, N15.1
88	Hyperplasia of prostate	600	N40
89	Inflammatory diseases of female pelvic organs	614-616	N70-N76
90	Pregnancy with abortive outcome	630-639	O00-O07
91	Other complications of pregnancy, childbirth and the puerperium	640-676	O10-O99
92	Certain conditions originating in the perinatal period	760-771.2, 771.4-779	P00-P96
93	Congenital malformations, deformations and chromosomal abnormalities	740-759	Q00-Q99
94	Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified	780-799	R00-R99
95	All other diseases (Residual non-injury)	Residual	D65-E07, E15-E34, E65-F99, G04-G12, G23-G25, G31-H93, K00-K22, K29-K3l, K50-K66, K71-K72, K75-K76, K83-M99, N13.0-N13.5, N13.7-N13.9, N14, N15.0, N15.8-N15.9, N20-N23, N28-N39, N4l-N64, N80-N98
	96-113: Please see ICD9 and ICD10 injury matrices for injury codes.
114	Enterocolitis due to Clostridium difficile(see note 3)	008.45	A04.7
115	COVID-19(see note 4)	n/a	U07.1

NCHS 39 Selected Causes of Death

Condition		ICD-10 Codes
1	Tuberculosis(see note 1)	A16-A19
2	Syphilis	A50-A53
3	Human immunodeficiency virus (HIV) disease	B20-B24
	Malignant neoplasms	C00-C97
4	Malignant neoplasm of stomach	C16
5	Malignant neoplasms of colon, rectum and anus	C18-C21
6	Malignant neoplasm of pancreas	C25
7	Malignant neoplasms of trachea, bronchus and lung	C33-C34
8	Malignant neoplasm of breast	C50
9	Malignant neoplasms of cervix uteri, corpus uteri and ovary	C53-C56
10	Malignant neoplasm of prostate	C61
11	Malignant neoplasms of urinary tract	C64-C68
12	Non-Hodgkin's lymphoma	C82-C85
13	Leukemia	C91-C95
14	Other malignant neoplasms	C00-C15,C17,C22-C24,C26-C32,C37-C49,C51-C52,C57-C60,C62-C63,C69-C81,C88,C90,C96-C97
15	Diabetes mellitus	E10-E14
16	Alzheimer's disease	G30
	Major cardiovascular diseases	I00-I78
	Diseases of heart	I00-I09,I11,I13,I20-I51
17	Hypertensive heart disease with or without renal disease	I11,I13
18	Ischemic heart diseases	I20-I25
19	Other diseases of heart	I00-I09,I26-I51
20	Essential hypertension and hypertensive renal disease	I10,I12,I15
21	Cerebrovascular diseases	I60-I69
22	Atherosclerosis	I70
23	Other diseases of circulatory system	I71-I78
24	Influenza and pneumonia(see note 2)	J09-J18
25	Chronic lower respiratory diseases	J40-J47
26	Peptic ulcer	K25-K28
27	Chronic liver disease and cirrhosis	K70,K73-K74
28	Nephritis, nephrotic syndrome and nephrosis	N00-N07,N17-N19,N25-N27
29	Pregnancy, childbirth and the puerperium	O00-O99
30	Certain conditions originating in the perinatal period	P00-P96
31	Congenital malformations, deformations and chromosomal abnormalities	Q00-Q99
32	Sudden infant death syndrome	R95
33	Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified	R00-R94,R96-R99
	(excluding Sudden infant death syndrome)	R00-R94,R96-R99
34	All other diseases (Residual, non-injury)	A00-A09,A20-A49,A54-B19,B25-B99,D00-E07,E15-G25,G31-H93,I80-J06,J20-J39,J60-K22,K29-K66,K71-K72,K75-M99,N10-N15,N20-N23,N28-N98,U04
#	Accidents (unintentional injuries)	V01-X59, Y85-Y86
35	Motor vehicle accidents	V02-V04,V09.0,V09.2,V12-V14,V19.0-V19.2,V19.4-V19.6,V20-V79,V80.3-V80.5,V81.0-V81.1,V82.0-V82.1,V83-V86,V87.0-V87.8,V88.0-V88.8,V89.0,V89.2
36	All other and unspecified accidents and adverse effects	V01,V05-V06,V09.1,V09.3-V09.9,V10-V11,V15-V18,V19.3,V19.8-V19.9,V80.0-V80.2,V80.6-V80.9,V81.2-V81.9,V82.2-V82.9,V87.9,V88.9,V89.1,V89.3,V89.9,V90-X59,Y40-Y86,Y88
37	Intentional self-harm (suicide)(see note 6)	*U03,X60-X84,Y87.0
38	Assault (homicide)	U01-U02,X85-Y09,Y87.1
39	All other external causes	Y10-Y36,Y87.2,Y89

About Injury ICD Codes

ICD codes for injury are grouped by both mechanism (such as poisoning, firearm, fall, and motor vehicle crash) as well as intent, and both mechanism and intent are used in classification. Injuries are classified using five categories of injury intent and typically at least 14 categories used to classify mechanism of injury. Thus an injury death with a mechanism of poisoning may be classified as unintentional (such as an unintentional drug overdose), intentional (homicide), self-inflicted (suicide), legal intervention, or undetermined intent.

The ICD-10-CM codes are for injury are significantly different from the ICD-10 codes for injury mortality. The NCHS categories, above, are known as "underlying causes" of death. Injury mechanism and intent categories are often referred to as "external causes" of death because they refer to the external forces applied to the body. The ICD-10-CM injury diagnosis codes (or nature of injury codes) are the ICD codes used to classify injuries by body region (for example, head, leg, chest) and nature of injury (for example, fracture, laceration, solid organ injury, poisoning).(2)

For more information on injury ICD codes, visit the IBIS help page on Injury ICD Codes.

Notes:

The NCHS list for mortality uses ICD10 code A16 for respiratory tuberculosis, but in the ICD-10-CM the correct code is A15.
J09 (Influenza due to certain identified influenza viruses) was added to the list of codes for influenza after 2000.
Beginning with 2006, Enterocolitis due to Clostridium difficile was added to the NCHS 50 and 113 lists of causes of death.
Code U07.1 was added for COVID-19 in March 2020.
Code U04 (Severe Acute Respiratory Syndrome, SARS) was added to the mortality ICD10 codes after 2000 but in ICD-10-CM the code is J12.81.
The ICD codes for terrorism are preceded with '*' because they are not used internationally.
Mental health conditions will never be used for an underlying cause of death, but they will be a primary diagnosis in ICD-10-CM.

References

1. International Classification of Diseases,Tenth Revision (ICD-10), National Center for Health Statistics, Centers for Disease Control and Prevention. Downloaded from https://www.cdc.gov/nchs/icd/icd10.htm on 7/22/2023.
2. ICD Injury Codes and Matrices, National Center for Health Statistics, Centers for Disease Control and Prevention. Downloaded from https://www.cdc.gov/nchs/injury/injury_matrices.htm on 07/26/2023.

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