Table 1

Comparison of chapter numbers and titles in ICD-9-CM with those in ICD-10-CM

ChapterICD-9-CMICD-10-CM
1Infectious and parasitic diseasesCertain infectious and parasitic diseases
2NeoplasmsMalignant neoplasms
3Endocrine, nutritional and metabolic diseases, and immunity disordersMalignant neoplasms
4Diseases of the blood and blood forming organsEndocrine, nutritional and metabolic diseases
5Mental disordersMental and behavioral disorders
6Diseases of the nervous system and sense organsDiseases of the nervous system
7Diseases of the circulatory systemDiseases of the eye and adnexa
8Diseases of the respiratory systemDiseases of the ear and mastoid process
9Diseases of the digestive systemDiseases of the circulatory system
10Diseases of the genitourinary systemsDiseases of the respiratory system
11Complications of pregnancy, childbirth and the puerperiumDiseases of the digestive system
12Disease of the skin and subcutaneous tissueDisease of the skin and subcutaneous tissue
13Diseases of the musculoskeletal system and connective tissueDiseases of the musculoskeletal system and connective tissue
14Congenital anomaliesDiseases of the genitourinary system
15Certain conditions originating in the perinatal periodPregnancy, childbirth and the puerperium
16Symptoms, signs and ill defined conditionsCertain conditions originating in the newborn (perinatal) period
17Injury and poisoningCongenital malformations, deformations and chromosomal abnormalities
18N/ASymptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
19N/AInjury, poisoning and certain other consequences of external causes
20N/AExternal causes of morbidity
21N/AFactors influencing health status and contact with health services
Supplementary classificationClassification of factors influencing health status and contact with health services (V codes)N/A
Supplementary classificationClassification of external cause of injury and poisoning (E codes)N/A

  • Source: Grider DJ.26