K42.9 — Umbilical hernia without obstruction or gangrene

K42.9

ICD-10 Chapter 11: Digestive System — illustrative image — Chapter 11: Diseases of the digestive system (K00–K95) — illustrative image

What this code means

An umbilical hernia is a bulge at the belly button from tissue pushing through the abdominal wall, without obstruction or gangrene.

Also called: umbilical hernia.

When this code is used

Used for umbilical hernia without obstruction or gangrene.

Where it sits in ICD-10-CM

Code K42.9 belongs to Chapter 11: Diseases of the digestive system, which covers codes K00–K95 in the FY2027 ICD-10-CM tabular list. The official description above is copied verbatim from the CDC/NCHS FY2027 code file.

Learn more about this condition

Condition guide: Hernia

Watch: related videos

▶ WatchUmbilical hernia repair ▶ WatchLaparoscopic treatment of a large umbilical hernia in a obese patient ▶ WatchSoft simple painless surgical repair of umbilical hernia

Frequently asked questions

What is ICD-10-CM code K42.9?

K42.9 is the ICD-10-CM diagnosis code for “Umbilical hernia without obstruction or gangrene”. An umbilical hernia is a bulge at the belly button from tissue pushing through the abdominal wall, without obstruction or gangrene.

When is code K42.9 used?

Used for umbilical hernia without obstruction or gangrene. It belongs to Chapter 11 of ICD-10-CM (Diseases of the digestive system).

This guide explains ICD-10-CM codes in plain language for patients, students and other readers. It is educational information only — not coding, billing or medical advice. The code recorded for any real encounter is assigned from the full clinical documentation by the treating team and qualified coders, and only they can decide which code fits a specific case.