Diagnosis Code


Code Information

Diagnosis Code: R79.81

Short Description: Abnormal blood-gas level

Long Description: Abnormal blood-gas level

The code R79.81 is VALID for claim submission

Code Classification:

  • Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00–R99)
    • Abnormal findings on examination of blood, without diagnosis (R70-R79)
      • Other abnormal findings of blood chemistry (R79)
        • R79.81 Abnormal blood-gas level

Code Version: 2022 ICD-10-CM


  • Abnormal arterial blood gas
  • Abnormal blood oxygen pressure
  • Arterial carbon dioxide abnormal
  • Blood gases abnormal
  • Blood oxygen level abnormal
  • Blood pH abnormal
  • Finding of oxygen saturation
  • Hypocapnia
  • Oxygen saturation below reference range

Diagnostic Related Group(s)

The code R79.81 is grouped in the following Diagnostic Related Group(s) (MS-DRG v39.0)
  • Signs And Symptoms With Mcc (947)
  • Signs And Symptoms Without Mcc (948)

Crosswalk Information

ICD-10 Code ICD-9 Code ICD-9 Description
R79.81 Right Arrow 790.91 Abnrml art blood gases

This ICD-10 to ICD-9 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-10 Code ICD-10 Description
R79 Other abnormal findings of blood chemistry
R79.0 Abnormal level of blood mineral
R79.1 Abnormal coagulation profile
R79.8 Other specified abnormal findings of blood chemistry
R79.82 Elevated C-reactive protein (CRP)
R79.83 Abnormal findings of blood amino-acid level
R79.89 Other specified abnormal findings of blood chemistry
R79.9 Abnormal finding of blood chemistry, unspecified

This page was last updated on: 10/1/2021