ICD10Check
CheckerBrowseOpen

R79.81

✓ Billable

Abnormal blood-gas level

Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)

Check This Code
✅ No additional coding notes for R79.81

🧪 Validate Combinations

Add R79.81 to the Excludes Checker to validate against your full code list.

Open in Checker →

Code Information

CodeR79.81
BillableYes
ParentR79.8
CategorySymptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
Excludes10 rule(s)
Excludes20 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)