R74.9
Billable codeAbnormal serum enzyme level, unspecified
The ICD-10 code for abnormal serum enzyme level, unspecified is R74.9.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This code describes an unspecified presentation. If the medical record documents a more specific detail (e.g. laterality, type, or affected site), a more specific sibling code should be used instead — see Related codes below.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- R74.0Nonspecific elevation of levels of transaminase and lactic acid dehydrogenase [LDH]non-billable header
- R74.8Abnormal levels of other serum enzymes
- R74.9Abnormal serum enzyme level, unspecified
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- 7905Approximate match
Associated MS-DRGs
R74.9 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.