Other diseases of appendix (K38) ICD-10-CM
The K38 code range covers other diseases of appendix with 7 ICD-10-CM diagnosis codes. 6 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Codes in the K38 Range 7 codes · 6 billable
About the K38 Code Range
The ICD-10 code section K38 covers various less common diseases of the appendix beyond typical appendicitis. These codes help specify conditions such as hyperplasia, appendicular concretions, diverticula, fistulas, and other specific or unspecified appendix disorders.
These codes are used to classify and differentiate unique appendix conditions. For example, K38.0 refers to hyperplasia of the appendix, also known by terms like lymphoid hyperplasia or hyperplastic polyp of the appendix. K38.1 identifies appendicular concretions, which are also called fecoliths. The code K38.2 covers diverticulum of the appendix, also called acquired diverticula of the large intestine. K38.3 denotes a fistula of the appendix. Other specified appendix diseases, including mucocele or appendiceal colic, fall under K38.8. When the appendix condition is not clearly defined, K38.9 is used for unspecified appendix disease. These detailed ICD-10 codes ensure proper documentation and treatment of various appendix-related conditions.
Questions About This Page
How many billable codes are in the K38 range?
Of the 7 codes in this range, 6 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the K38 range classify?
The range classifies other diseases of appendix. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
