K35 Acute appendicitis
ICD-10-CM category K35 sits in Chapter 11 (Diseases of the digestive system, K00-K95). It contains 13 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.
Subcategories
K35.2 Acute appendicitis with generalized peritonitisK35.20 Acute appendicitis with gen peritonitis, without abscessK35.21 Acute appendicitis with gen peritonitis, with abscessK35.3 Acute appendicitis with localized peritonitisK35.8 Other and unspecified acute appendicitisK35.89 Other acute appendicitis
Billable codes in K35
| Code | Description |
|---|---|
K35.200 | Acute appendicitis with generalized peritonitis, without perforation or abscess |
K35.201 | Acute appendicitis with generalized peritonitis, with perforation, without abscess |
K35.209 | Acute appendicitis with generalized peritonitis, without abscess, unspecified as to perforation |
K35.210 | Acute appendicitis with generalized peritonitis, without perforation, with abscess |
K35.211 | Acute appendicitis with generalized peritonitis, with perforation and abscess |
K35.219 | Acute appendicitis with generalized peritonitis, with abscess, unspecified as to perforation |
K35.30 | Acute appendicitis with localized peritonitis, without perforation or gangrene |
K35.31 | Acute appendicitis with localized peritonitis and gangrene, without perforation |
K35.32 | Acute appendicitis with perforation, localized peritonitis, and gangrene, without abscess |
K35.33 | Acute appendicitis with perforation, localized peritonitis, and gangrene, with abscess |
K35.80 | Unspecified acute appendicitis |
K35.890 | Other acute appendicitis without perforation or gangrene |
K35.891 | Other acute appendicitis without perforation, with gangrene |
Search within ICD-10-CM for K35 and related codes
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