M60.80 — Other myositis, unspecified site
ICD-10-CM
Prior Authorization
No Prior Auth Required
No active coverage policies found for this code (low confidence)
Documentation Required
- The submitted medical record must support the selected ICD-10-CM code(s), and the submitted CPT/HCPCS code must accurately describe the service performed.
- The medical record must include the legible signature of the physician or non-physician practitioner responsible for and providing the care.
- When billing CPT 84999 for the listed tests, include a note identifying the specific test in the Remarks (Part A) or Narrative (Part B) area of the claim.
- All documentation must be maintained in the patient's medical record, be legible, include patient identification (e.g., complete name) and dates of service, and be made available to the contractor upon request.
Key Coverage Criteria
- For tests that currently lack specific CPT codes (functional intracellular analysis and total antioxidant function), bill using CPT 84999 and add a note identifying which test was performed in the Remarks area for Part A claims and the Narrative area for Part B claims.
- Coverage and reasonable/necessary determinations for assays for vitamins and metabolic function are governed by LCD L34914 and claims must meet that LCD's requirements to be covered.
- 25-hydroxy vitamin D testing (including fractions, if performed) is covered when deemed reasonable and necessary per Local Coverage Determination L33771.
- Erythrocyte sedimentation rate (ESR) testing is covered only when reasonable and necessary as defined by Local Coverage Determination L34021.
- ESR performed for rheumatoid arthritis patients to assess the need for medication adjustments should be billed with a diagnosis code that reflects the specific antirheumatic medication the patient is receiving.
- Use ICD-10 codes T39.4X5A–T39.4X5S for ESR billing when the patient with rheumatoid arthritis is receiving antirheumatics such as gold salts for medication evaluation.
20 Active Policies
L39624 — Amniotic and Placental Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Wound
J05
A59434 — Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Wound
J05
A58893 — Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Wound
J06
L35098 — Nerve Conduction Studies and Electromyography
J06
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