ICD-10 Diagnosis Code K35.80

Unspecified acute appendicitis

Diagnosis Code K35.80

ICD-10: K35.80
Short Description: Unspecified acute appendicitis
Long Description: Unspecified acute appendicitis
This is the 2018 version of the ICD-10-CM diagnosis code K35.80

Valid for Submission
The code K35.80 is valid for submission for HIPAA-covered transactions.

Code Classification
  • Diseases of the digestive system (K00–K93)
    • Diseases of appendix (K35-K38)
      • Acute appendicitis (K35)

Information for Medical Professionals

Diagnostic Related Groups
The diagnosis code K35.80 is grouped in the following Diagnostic Related Group(s) (MS-DRG V34.0)

  • 393 - OTHER DIGESTIVE SYSTEM DIAGNOSES WITH MCC
  • 394 - OTHER DIGESTIVE SYSTEM DIAGNOSES WITH CC
  • 395 - OTHER DIGESTIVE SYSTEM DIAGNOSES WITHOUT CC/MCC

Convert to ICD-9 Additional informationCallout TooltipGeneral Equivalence Map
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

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 suppurative appendicitis
  • Necrotic enteritis
  • Suppurative appendicitis

Index of Diseases and Injuries
References found for the code K35.80 in the Index of Diseases and Injuries:


Information for Patients


Appendicitis

The appendix is a small, tube-like organ attached to the first part of the large intestine. It is located in the lower right part of the abdomen. It has no known function. A blockage inside of the appendix causes appendicitis. The blockage leads to increased pressure, problems with blood flow, and inflammation. If the blockage is not treated, the appendix can burst and spread infection into the abdomen. This causes a condition called peritonitis.

The main symptom is pain in the abdomen, often on the right side. It is usually sudden and gets worse over time. Other symptoms may include

  • Swelling in the abdomen
  • Loss of appetite
  • Nausea and vomiting
  • Constipation or diarrhea
  • Inability to pass gas
  • Low fever

Not everyone with appendicitis has all these symptoms.

Appendicitis is a medical emergency. Treatment almost always involves removing the appendix. Anyone can get appendicitis, but it is more common among people 10 to 30 years old.

NIH: National Institute of Diabetes and Digestive and Kidney Diseases

  • Appendectomy (Medical Encyclopedia)
  • Appendicitis (Medical Encyclopedia)


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