ICD-10 R74.0
Non-Billable HeaderNonspecific elevation of levels of transaminase and lactic acid dehydrogenase [LDH]
About ICD-10-CM R74.0
ICD-10-CM code R74.0 represents Nonspecific elevation of levels of transaminase and lactic acid dehydrogenase [LDH]. This is a non-billable header code in the Symptoms, Signs, and Abnormal Findings chapter (block R74). The 2026 edition of ICD-10-CM R74.0 became effective on October 1, 2025. Non-billable codes cannot be used as a primary or secondary diagnosis on a claim, use a more specific child code instead.
Medicare LCD Coverage for R74.0
Local Coverage Determinations (LCDs) from CMS MACs that list R74.0 as a covered diagnosis.
This doesn't mean the code isn't covered, it means no MAC has issued a Local Coverage Determination naming this specific code. Coverage may still apply under National Coverage Determinations or general medical-necessity rules.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing R74.0.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but R74.0 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with R74.0
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Convert R74.0 to ICD-9-CM
Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.
| ICD-10 | ICD-9 | Mapping Flags |
|---|---|---|
| R74.0 | 7904 | 00000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To R74.0
Other codes in section R70-R79 (Abnormal findings on examination of blood, without diagnosis).
ICD-10 R74.0, Billing FAQ
Is ICD-10 code R74.0 billable? +
No, R74.0 is a non-billable header code. Use a more specific child code from block R74 when submitting claims.
What ICD-9 codes does R74.0 map to? +
Per CMS GEMs, R74.0 maps to ICD-9 codes: 7904. Useful for legacy data review and historical claim analysis.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on June 2, 2026.
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