ICD-10-CM 2027
ICD-10 code for liver function test abnormal
From the official ICD-10-CM alphabetic index entry “Abnormal, abnormality, abnormalities › liver function test”. Page updated September 29, 2026.
About coding liver function test abnormal
The ICD-10-CM code for liver function test abnormal is R79.89 (Other specified abnormal findings of blood chemistry).
Within R79.8, choose R79.89 (Other specified abnormal findings of blood chemistry) only when documentation doesn't support a more specific option: abnormal blood-gas level (R79.81), elevated C-reactive protein (CRP) (R79.82) and abnormal findings of blood amino-acid level (R79.83).
Use an additional code to identify any retained foreign body, if applicable (Z18.-).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Common questions about liver function test abnormal ICD-10 codes
What is the ICD-10 code for liver function test abnormal?
- R79.89 — Other specified abnormal findings of blood chemistry.
Is R79.89 billable?
- Yes. R79.89 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can R79.89 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict R79.89 as a principal diagnosis.
Is R79.89 a CC or MCC?
- No. R79.89 is neither a CC nor an MCC under MS-DRG v44.0.