ICD-10-CM — Diagnosis Codes

The 2020 ICD-10-CM Tabular List is a structured list of diagnosis codes divided into 21 chapters, each containing sections, categories, and codes based on body system or condition.

Tabular List

Find your ICD-10-CM code by first selecting the most applicable chapter


Find ICD-10-CM diagnosis code

  1. Locate the term in the Alphabetic Index of Diseases & Injuries, then verify the code in the Tabular List found here.

    The ICD-10-CM is divided into the Alphabetic Index, an alphabetical list of terms and their corresponding code, and the Tabular List, a structured list of codes divided into chapters based on body system or condition. The Alphabetic Index consists of the following parts: the Index of Diseases and Injury, the Index of External Causes of Injury, the Table of Neoplasms and the Table of Drugs and Chemicals.

    It is essential to use both the Alphabetic Index and Tabular List when locating and assigning a code. The Alphabetic Index does not always provide the full code. Selection of the full code, including laterality and any applicable 7th character can only be done in the Tabular List.

  2. Level of Detail in Coding

    ICD-10-CM diagnosis codes are to be used and reported at their highest number of characters available. Codes with 3 characters are included in ICD-10-CM as the heading of a category that may be further subdivided by 4, 5, or 6 characters, which provide greater detail.