ICD-10 M60.004
Billable / Specific CCInfective myositis, unspecified left leg
About ICD-10-CM M60.004
ICD-10-CM code M60.004 represents Infective myositis, unspecified left leg. This is a billable/specific code in the Musculoskeletal and Connective Tissue chapter (block M60). The 2026 edition of ICD-10-CM M60.004 became effective on October 1, 2025.
Coding Tips for M60.004
Specialist guidance from the PayerReady Medical Coding Team. Specificity warnings, HCC capture rules, sequencing notes.
M60.004 is designated CC for MS-DRG grouping. On inpatient claims, this code can shift the DRG to the with-CC variant when documented as a present-on-admission secondary diagnosis. Hospital CDI programs flag CC opportunities during chart review. Failure to capture this code may leave 30 to 80 percent of the inpatient stay revenue unrealized.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under M60.004. Per CMS ICD-10-CM Tabular 2026.
- Infective myositis, left lower limb NOS
Inpatient DRG Impact, CC
codes Infective myositis, unspecified left leg. As a Complication/Comorbidity (CC), this contributes to DRG severity adjustment when documented alongside the principal diagnosis.
Medicare LCD Coverage for M60.004
Local Coverage Determinations (LCDs) from CMS MACs that list M60.004 as a covered diagnosis.
Showing top 10 of 149 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing M60.004.
1 Cigna
5 Medicare
CPT Codes Commonly Billed with M60.004
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 M60.004 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 |
|---|---|---|
| M60.004 | 7280 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To M60.004
Other codes in section M60-M63 (Disorders of muscles).
ICD-10 M60.004, Billing FAQ
Is ICD-10 code M60.004 billable? +
Yes, M60.004 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What other names or terms map to M60.004? +
ICD-10 M60.004 includes: Infective myositis, left lower limb NOS.
Is M60.004 a CC or MCC for inpatient DRG? +
Yes, this code is designated as CC. Documenting as a secondary diagnosis on inpatient claims can shift the DRG to a higher-weighted category.
What ICD-9 codes does M60.004 map to? +
Per CMS GEMs, M60.004 maps to ICD-9 codes: 7280. 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 1, 2026.
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