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ICD-9-CM Chapters

The 2016 edition of the ICD-9-CM is divided into 19 chapters, based on the subject of the ICD codes each chapter contains. Each chapter is identified by a chapter number and description. The set of ICD codes contained in each chapter is specified by a range showing the first three digits of the code range included.

Chapter Code Range Description
1 001-139 Infectious And Parasitic Diseases
2 140-239 Neoplasms
3 240-279 Endocrine, Nutritional And Metabolic Diseases, And Immunity Disorders
4 280-289 Diseases Of The Blood And Blood-Forming Organs
5 290-319 Mental Disorders
6 320-389 Diseases Of The Nervous System And Sense Organs
7 390-459 Diseases Of The Circulatory System
8 460-519 Diseases Of The Respiratory System
9 520-579 Diseases Of The Digestive System
10 580-629 Diseases Of The Genitourinary System
11 630-679 Complications Of Pregnancy, Childbirth, And The Puerperium
12 680-709 Diseases Of The Skin And Subcutaneous Tissue
13 710-739 Diseases Of The Musculoskeletal System And Connective Tissue
14 740-759 Congenital Anomalies
15 760-779 Certain Conditions Originating In The Perinatal Period
16 780-799 Symptoms, Signs, And Ill-Defined Conditions
17 800-999 Injury And Poisoning
18 V01-V91 Supplementary Classification Of Factors Influencing Health Status And Contact With Health Services
19 E000-E999 Supplementary Classification Of External Causes Of Injury And Poisoning

** This Document Provided By ICD.Codes **
Source: http://icd.codes/icd9cm