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R94.2

R94.2: Abnormal results of pulmonary function studies

Billable / specific codeICD-10-CM

R94.2 is a billable, specific ICD-10-CM code for abnormal results of pulmonary function studies. It is valid for submission on a claim.

Check R94.2 with the rest of the claim: free scrubber

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Reduced ventilatory capacity
  • Reduced vital capacity

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

R94.2 is named in 8 Medicare coverage policies: 8 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A53065Billing and Coding: Outpatient Physical Therapy
  • A56580Billing and Coding: Computerized Axial Tomography (CT), Thorax
  • A56697Billing and Coding: Non-Invasive Vascular Studies
  • A56717Billing and Coding: Respiratory Therapy (Respiratory Care)

Alphabetic index entries that lead here

  • Diminished, diminution›vital capacity
  • Reduced›ventilatory or vital capacity
  • Abnormal, abnormality, abnormalities›function studies›pulmonary
  • Abnormal, abnormality, abnormalities›pulmonary›test results
  • Findings, abnormal, inconclusive, without diagnosis›function study NEC›pulmonary
  • Findings, abnormal, inconclusive, without diagnosis›scan NEC›lung

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under R94

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.