AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2018 Issue 4; New/Revised ICD-10-CM Codes

Acute Appendicitis

The following codes were created for acute appendicitis: K35.20  Acute appendicitis with generalized peritonitis, without abscess K35.21  Acute appendicitis with generalized peritonitis, with abscess 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 K35.890  Other acute appendicitis without perforation or gangrene K35.891  Other acute appendicitis without perforation, with gangrene Appendicitis occurs when blockage of the appendix causes increased pressure and...

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