Other appendicitis (K36)
The ICD-10 code K36 is used to classify cases of appendicitis that do not fit the typical acute form but still affect the appendix. This code covers various less common types, such as chronic, recurrent, or atypical appendicitis.
Specifically, code K36 identifies conditions labeled as "other appendicitis," which include healed appendicitis, perforation of the appendix, and chronic forms like catarrhal, subacute, pelvic, or recurrent appendicitis. These synonyms help clarify that the code is appropriate for cases where inflammation persists or presents differently than the sudden onset acute appendicitis often coded under other categories. Understanding these synonyms supports precise coding by linking terms like "perforation of appendix" or "atypical appendicitis" directly to K36. Using this code correctly ensures accurate medical record documentation and billing when dealing with these specific appendiceal conditions.
Instructional Notations
Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
- Chronic appendicitis
- Recurrent appendicitis
Clinical Terms
The following clinical terms provide additional context, helping users better understand the clinical background and common associations for each diagnosis listed in this section. Including related terms alongside ICD-10-CM codes supports coders, billers, and healthcare professionals in improving accuracy, enhancing documentation, and facilitating research or patient education.
Appendicitis
Acute inflammation of the APPENDIX. Acute appendicitis is classified as simple, gangrenous, or perforated.
Appendix
A worm-like blind tube extension from the CECUM.
