R74
⚠ Non-billable (Header)Abnormal serum enzyme levels
Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
⚠️ This is a category header code — not billable. Use a more specific child code below.
Child Codes (3)
Clinical Description
ICD-10-CM code R74 represents abnormal serum enzyme levels. This code falls under the Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99) classification. It is a non-billable category header code. A more specific child code from the list below must be used for billing and reimbursement purposes.
Frequently Asked Questions
What is ICD-10 code R74?
ICD-10-CM code R74 is "Abnormal serum enzyme levels". It belongs to the category: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99).
Is R74 a billable ICD-10 code?
No, R74 is a non-billable header code. A more specific child code must be used for billing.
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Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)