ICD-10-CM · Chapter 18 · R00–R99
R79.81
Abnormal blood-gas level
Symptoms, signs and abnormal clinical and laboratory findings
Quick facts
- Code
- R79.81
- Type
- Billable code
- ICD-10-CM chapter
- Chapter 18 — Symptoms, signs and abnormal clinical and laboratory findings
- Category
- R79 — Other abnormal findings of blood chemistry
- Specificity
- 5 characters
How coders use this code
ICD-10-CM R79.81 is a billable, fully specified code, so it can be reported directly on a claim to document a diagnosis of abnormal blood-gas level. Coders assign it when the chart documentation supports this level of detail, always matching to the most specific code available and verifying against the chapter-specific guidelines published annually by NCHS/CMS.
Related codes in R79
- R79Other abnormal findings of blood chemistry
- R79.0Abnormal level of blood mineral
- R79.1Abnormal coagulation profile
- R79.8Other specified abnormal findings of blood chemistry
- R79.82Elevated C-reactive protein (CRP)
- R79.83Abnormal findings of blood amino-acid level
- R79.89Other specified abnormal findings of blood chemistry
- R79.9Abnormal finding of blood chemistry, unspecified
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