{
    "code": "82550",
    "coding_system": "CPT",
    "canonical_url": "https://localishealth.com/cpt/82550/2014/B",
    "release_specific_url": "https://localishealth.com/cpt/82550/2021/B",
    "description": "Measurement of total creatine kinase, an enzyme concentrated in skeletal muscle, heart muscle, and the brain that leaks into the blood when muscle cells are damaged. This is the overall total; separate codes cover the breakdown into isoenzymes that indicate which tissue the enzyme came from. Very high values are the hallmark of rhabdomyolysis, and modest elevations are common with muscle injury, intense exertion, or muscle-related side effects of medication.",
    "answer": {
        "question": "Did Medicare pay separately for CPT 82550 in Q2 2021?",
        "text": "Not at a published national rate. CPT 82550 carries status X (statutory exclusion) in the Q2 2021 release. The statutory definition of physician services does not include this item. Treat the blank amount as unpriced, not as $0."
    },
    "release": {
        "schedule": "pfs",
        "year": 2021,
        "quarter": "B",
        "label": "Q2 2021",
        "effective": "April 1 – June 30, 2021",
        "revision": 1
    },
    "status": {
        "code": "X",
        "non_facility_payable": false,
        "facility_payable": false
    },
    "national_rates_usd": {
        "office_non_facility": null,
        "facility": null,
        "sequestration_applied": false,
        "gpci": 1
    },
    "rvus": {
        "work": null,
        "practice_expense_non_facility": null,
        "practice_expense_facility": null,
        "malpractice": null
    },
    "formula": "(work_rvu × work_gpci + pe_rvu × pe_gpci + mp_rvu × mp_gpci) × conversion_factor",
    "conversion_factor": 34.8931,
    "source": {
        "label": "Physician relative value file (Q2 2021)",
        "cms_url": "https://www.cms.gov/files/zip/rvu21b-updated-03022021.zip",
        "local_source_url": "https://localishealth.com/sources/physician-fee-schedule/2021/B",
        "file": "PPRRVU21_APR.csv",
        "row": 14449,
        "sha256": "524bee7096166c9011a4ea02189783ef8c91f4d444585e5b2d561b879f9262de"
    },
    "modified_at": "2026-08-04T03:10:33+00:00"
}