R74
⚠ Non-billable
Abnormal serum enzyme levels
ICD-10-CM · FY2026 · Symptoms, Signs and Abnormal Clinical and Laboratory Findings
Code
R74
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Symptoms, Signs and Abnormal Clinical and Laboratory Findings
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code R74?
ICD-10-CM code R74 represents Abnormal serum enzyme levels. It is a non-billable header code requiring a more specific subcategory in the Symptoms, Signs and Abnormal Clinical and Laboratory Findings chapter, effective October 1, 2025 – September 30, 2026.
Is R74 billable?
No. R74 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is R74 in?
R74 belongs to the Symptoms, Signs and Abnormal Clinical and Laboratory Findings chapter (R00–R99) of ICD-10-CM.
Related codes in the R74 category
R74.0
Nonspecific elevation of levels of transaminase and lactic acid dehydrogenase [LDH]
Non-billable
R74.8
Abnormal levels of other serum enzymes
Billable
R74.9
Abnormal serum enzyme level, unspecified
Billable
R74.01
Elevation of levels of liver transaminase levels
Billable
R74.02
Elevation of levels of lactic acid dehydrogenase [LDH]
Billable
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