Decreased Glomerular Filtration Rate

What is the appropriate code assignment for decreased glomerular filtration rate (GFR) and elevated creatinine? We are coding for the radiologist and abnormal creatinine clearance is indexed to code 794.4, Nonspecific abnormal results of function studies. Is 794.4 the correct code assignment for decreased GFR and elevated creatinine?  ...

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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 premium article explains how a coding question about abnormal kidney-related laboratory results is handled in diagnosis coding guidance. It is aimed at coders working with radiology-related documentation and those comparing closely related abnormal lab findings in the ICD-9-CM system. The discussion centers on which broad diagnosis category applies and why a different indexed term may not fit the documented finding.

Why This Topic Matters

Accurate diagnosis code selection for abnormal laboratory findings affects claim integrity, data quality, and consistency in radiology and other diagnostic reporting workflows.

What You Will Learn

  • How this coding question is framed
  • Which general diagnosis coding category is discussed for abnormal kidney-related laboratory findings
  • Why related indexed terms may not match the documented finding
  • How the article distinguishes between similar abnormal laboratory concepts

Who Should Read This

  • Medical coders
  • Coding auditors
  • Radiology coding staff
  • Revenue cycle professionals

Codes Discussed

  • ICD-9-CM: 794.4
  • ICD-9-CM: 790.6

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