Posterior Malleolus and Medial Malleolus Fractures

The patient had a closed fracture of the posterior malleolus and medial malleolus. Would this be coded as a bimalleolar fracture ( 824.4 )? Does code 824.4 , Fracture of ankle, bimalleolar, closed, only refer to fractures described by the provider as bimalleolar (meaning both the medial and lateral), or can it be used when two malleoli are involved such as the posterior and medial without documentation of “bimalleolar?” ...

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

Article Overview

This article explains how a posterior malleolus and medial malleolus fracture is discussed in the context of ankle fracture coding terminology. It is relevant for coders, billing staff, and clinical documentation reviewers who work with fracture classification and diagnosis coding concepts. The article focuses on a legacy ICD-9-CM fracture code and the terminology used in provider documentation.

Why This Topic Matters

Accurate fracture classification depends on matching the documented anatomy to the appropriate diagnosis code set. This topic matters for anyone reviewing ankle fracture documentation and trying to understand how terminology is applied in legacy coding references.

What You Will Learn

  • How an ankle fracture scenario is discussed in relation to coding terminology
  • How provider wording can be interpreted in a legacy diagnosis coding context
  • What type of fracture classification topic the article addresses
  • Why documentation language matters in fracture coding references

Who Should Read This

  • Medical coders
  • Billing staff
  • Clinical documentation specialists
  • Auditors
  • Healthcare providers

Codes Discussed


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