ICD-10 Code
International Classification of Diseases, 10th Revision
Oct 23, 2018

See: Acute appendicitis

K35 is NOT a complete or valid ICD 10 diagnosis code.

You should code each health care encounter to the level of certainty known for that encounter. When sufficient clinical information is not known or available to assign a more specific code, it is acceptable to report the appropriate unspecified code.

See below for more specifc codes relating to
Acute appendicitis

More specific codes for Acute appendicitis

  • K35.2 - Acute appendicitis with generalized peritonitis
    • K35.20 - Acute appendicitis with generalized peritonitis, without abscess
    • K35.21 - Acute appendicitis with generalized peritonitis, with abscess
  • 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 and localized peritonitis, without abscess
    • K35.33 - Acute appendicitis with perforation and localized peritonitis, with abscess
  • K35.8 - Other and unspecified acute appendicitis
    • K35.80 - 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
Back to K35
See the ICD-10-CM Coding Guidelines.

Questions related to K35 Acute appendicitis

When ICD 10 was implemented on October 1, 2015, it did not affect physicians', outpatient facilities', and hospital outpatient departments' use of CPT codes on Medicare Fee-For-Service claims. Providers should continue to use CPT codes to report these services.