Get started free

K35.20

Non-billable

Acute appendicitis with generalized peritonitis, without abscess

K35.20 is the ICD-10-CM code for Acute appendicitis with generalized peritonitis, without abscess. It is a non-billable category code — use a more specific child code such as K35.200 for billing.

Status
Header (non-billable)
Chapter
K00-K95
Parent
K35.2
Subcodes
3
Edition
FY2026

K00-K95 Diseases of the digestive system

No additional coding notes for this code.

Frequently asked questions

What is ICD-10 code K35.20?
K35.20 is the ICD-10-CM code for "Acute appendicitis with generalized peritonitis, without abscess". It falls under K00-K95 Diseases of the digestive system.
Is K35.20 a billable code?
No — K35.20 is a non-billable header code. Use a more specific child code (such as K35.200) for billing.
What are the subcodes of K35.20?
K35.20 has 3 more specific child codes, including K35.200, K35.201, K35.209.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

Look up another ICD-10 code or condition

Powered by Eleplan

Free ICD-10 lookup is just the start. Eleplan keeps the whole care plan in one place.

Diagnoses, medications, documents, appointments, and the whole care team — organized and always in sync, with Ellie, your AI care assistant, on top of it. Free to start.

Get started freeSee how Eleplan works →