ICD-10: Switch from 567.22 to K65.1 for Peritoneal Abscess

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Note:  The following article synopsis was NOT provided by AAPC. It was created by Find-A-Code/innoviHealth.

Article Overview

This coding article focuses on the transition from ICD-9-CM to ICD-10-CM for peritoneal abscess and related terminology used in clinical documentation. It is aimed at coders and billing staff who need to recognize the diagnosis across code sets, understand the general context of related causes when documented, and note the kinds of procedural findings that may support the diagnosis. The discussion also highlights similar wording a physician may use in records, making it useful for diagnosis lookup and documentation review.

Why This Topic Matters

Accurate identification of this diagnosis across ICD-9-CM and ICD-10-CM helps maintain consistent reporting during code-set transitions and supports better matching of chart language to the appropriate diagnosis category.

What You Will Learn

  • How the diagnosis is referenced across ICD-9-CM and ICD-10-CM
  • What kinds of clinical findings may support recognition of the condition
  • Why related documented causes may also need attention in the record
  • Which broader terminology may appear in physician documentation

Who Should Read This

  • Medical coders
  • Billing specialists
  • Clinical documentation improvement staff
  • Health information management professionals

Codes Discussed


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