ICD-10 Code
International Classification of Diseases, 10th Revision
Nov 18, 2018

See: Other and unspecified acute appendicitis

  ICD-10 Code for Unspecified acute appendicitis K35.80

K35.80 is a valid1 ICD 10 diagnosis code.

K35.80 is valid for submission for HIPAA-covered transactions.

Chapter 11 Diseases of the digestive system (K00-K95)
Section K35-K38 Diseases of appendix (K35-K38)
Category K35 Acute appendicitis

• See below for any additional coding requirements that may be necessary.

• Check for any notations, inclusions and/or exclusions that are specific to this ICD 10 code before using

1 No additional coding requirements necessary.
Inclusion Term
  • Acute appendicitis NOS
  • Acute appendicitis without (localized) (generalized) peritonitis

Related Terms to “Unspecified acute appendicitis”

  • Appendicitis(pneumococcal) (retrocecal) - K37
    • acute(catarrhal) (fulminating) (gangrenous) (obstructive) (retrocecal) (suppurative) - K35.80
  • Gangrene, gangrenous(connective tissue) (dropsical) (dry) (moist) (skin) (ulcer) - I96See also Necrosis
    • appendix - K35.80
See the ICD-10-CM Coding Guidelines.

Questions related to K35.80 Unspecified 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.