K38.3Billable

Fistula of appendix

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

Related codes in category K38

K38Other diseases of appendixK38.0Hyperplasia of appendixYesK38.1Appendicular concretionsYesK38.2Diverticulum of appendixYesK38.8Other specified diseases of appendixYesK38.9Disease of appendix, unspecifiedYes

Frequently asked questions

What is ICD-10 code K38.3?

K38.3 is an ICD-10-CM diagnosis code for Fistula of appendix.

Is K38.3 a billable code?

Yes. K38.3 is billable and specific enough to be used on a claim.

What ICD-10-CM chapter is K38.3 in?

K38.3 falls under Chapter 11: Diseases of the digestive system.

When did K38.3 become effective?

K38.3 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to K38.3?

K38.3 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.