ICD-9-CM Codes ICD-9-PCS Codes

540.9 - Acute appendicitis without mention of peritonitis

GEM Conversion to ICD-10 CM

K35.80

Fs: 10000 – Unspecified acute appendicitis

K35.89

Fs: 10000 – Other acute appendicitis

Sibling Codes

540.0

Acute appendicitis with generalized peritonitis

540.1

Acute appendicitis with peritoneal abscess

540.9

Acute appendicitis without mention of peritonitis

Parent Sibling Codes

541

Appendicitis, unqualified

542

Other appendicitis