Diagnosis Code

K35.80 UNSPECIFIED ACUTE APPENDICITIS


Code Information

Diagnosis Code: K35.80

Short Description: Unspecified acute appendicitis

Long Description: Unspecified acute appendicitis

The code K35.80 is VALID for claim submission

Code Classification:

  • Diseases of the digestive system (K00–K95)
    • Diseases of appendix (K35-K38)
      • Acute appendicitis (K35)
        • K35.80 Unspecified acute appendicitis

Code Version: 2022 ICD-10-CM


Synonyms

  • Abscess of appendix
  • Acute appendicitis
  • Acute appendicitis with appendix abscess
  • Acute appendicitis without peritonitis
  • Acute fulminating appendicitis
  • Acute gangrenous appendicitis
  • Acute obstructive appendicitis
  • Acute phlegmonous appendicitis
  • Acute suppurative appendicitis
  • Complicated appendicitis
  • Gangrenous appendicitis
  • Purulent enteritis
  • Purulent enteritis
  • Suppurative appendicitis

Diagnostic Related Group(s)

The code K35.80 is grouped in the following Diagnostic Related Group(s) (MS-DRG v39.0)
  • Other Digestive System Diagnoses With Mcc (393)
  • Other Digestive System Diagnoses With Cc (394)
  • Other Digestive System Diagnoses Without Cc/mcc (395)

References to Index of Diseases and Injuries

The code K35.80 has the following ICD-10-CM references to the Index of Diseases and Injuries
  • Inclusion Terms:
    • Acute appendicitis NOS
    • Acute appendicitis without (localized) (generalized) peritonitis

Crosswalk Information

ICD-10 Code ICD-9 Code ICD-9 Description
K35.80 Right Arrow 540.9 Acute appendicitis NOS

This ICD-10 to ICD-9 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-10 Code ICD-10 Description
K35 Acute appendicitis
K35.2 Acute appendicitis with generalized peritonitis
K35.20 Acute appendicitis with generalized peritonitis, without abscess
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
K35.21 Acute appendicitis with generalized peritonitis, with abscess
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
K35.3 Acute appendicitis with localized peritonitis
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
K35.8 Other and unspecified acute appendicitis
K35.89 Other acute appendicitis
K35.890 Other acute appendicitis without perforation or gangrene
K35.891 Other acute appendicitis without perforation, with gangrene


This page was last updated on: 10/1/2023