K38Header code — not billable

Other diseases of appendix

Chapter
11. Diseases of the digestive system
Category
K38
Effective date
October 1, 2026

Related codes in category K38

K38.0Hyperplasia of appendixYesK38.1Appendicular concretionsYesK38.2Diverticulum of appendixYesK38.3Fistula of appendixYesK38.8Other specified diseases of appendixYesK38.9Disease of appendix, unspecifiedYes

Frequently asked questions

What is ICD-10 code K38?

K38 is an ICD-10-CM diagnosis code for Other diseases of appendix.

Is K38 a billable code?

No. K38 is a category/header code, not billable on its own — use one of its more specific child codes instead.

What ICD-10-CM chapter is K38 in?

K38 falls under Chapter 11: Diseases of the digestive system.

When did K38 become effective?

K38 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to K38?

K38 belongs to category K38, which includes 6 other codes — see the related codes list on this page.

ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.