ICD-10-CM · Chapter 11 · K00–K95
K35.8
Other and unspecified acute appendicitis
Diseases of the digestive system
Heads up:this is a parent code. It's typically not directly billable — you need to drill down to a more specific child code (one with additional digits) to use on a claim.
Quick facts
- Code
- K35.8
- Type
- Category / header (non-billable)
- ICD-10-CM chapter
- Chapter 11 — Diseases of the digestive system
- Category
- K35 — Acute appendicitis
- Specificity
- 4 characters
How coders use this code
ICD-10-CM K35.8 is a category (header) for other and unspecified acute appendicitis. It is generally not reported directly on a claim — coders drill down to a more specific child code (one with additional characters) that matches the documentation. Use the related codes below to find the billable code that fits, and verify against the annual NCHS/CMS guidelines.
Related codes in K35
- K35Acute appendicitis
- K35.2Acute appendicitis with generalized peritonitis
- K35.20Acute appendicitis with generalized peritonitis, without abscess
- K35.200Acute appendicitis with generalized peritonitis, without perforation or abscess
- K35.201Acute appendicitis with generalized peritonitis, with perforation, without abscess
- K35.209Acute appendicitis with generalized peritonitis, without abscess, unspecified as to perforation
- K35.21Acute appendicitis with generalized peritonitis, with abscess
- K35.210Acute appendicitis with generalized peritonitis, without perforation, with abscess
- K35.211Acute appendicitis with generalized peritonitis, with perforation and abscess
- K35.219Acute appendicitis with generalized peritonitis, with abscess, unspecified as to perforation
- K35.3Acute appendicitis with localized peritonitis
- K35.30Acute appendicitis with localized peritonitis, without perforation or gangrene
- K35.31Acute appendicitis with localized peritonitis and gangrene, without perforation
- K35.32Acute appendicitis with perforation, localized peritonitis, and gangrene, without abscess
- K35.33Acute appendicitis with perforation, localized peritonitis, and gangrene, with abscess
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