{
    "code": "83721",
    "coding_system": "CPT",
    "canonical_url": "https://localishealth.com/cpt/83721/2014/B",
    "release_specific_url": "https://localishealth.com/cpt/83721/2023/D",
    "description": "Measures LDL, the so-called bad cholesterol, directly in a blood sample instead of arriving at it by arithmetic. A standard lipid panel usually estimates LDL from total cholesterol, HDL, and triglycerides, and that estimate degrades badly when triglycerides are high. Measuring the particle directly sidesteps that problem, and some direct methods also work without requiring the patient to fast beforehand.",
    "answer": {
        "question": "Did Medicare pay separately for CPT 83721 in Q4 2023?",
        "text": "Not at a published national rate. CPT 83721 carries status X (statutory exclusion) in the Q4 2023 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": 2023,
        "quarter": "D",
        "label": "Q4 2023",
        "effective": "October 1 – December 31, 2023",
        "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": 33.8872,
    "source": {
        "label": "Physician relative value file (Q4 2023)",
        "cms_url": "https://www.cms.gov/files/zip/rvu23d.zip",
        "local_source_url": "https://localishealth.com/sources/physician-fee-schedule/2023/D",
        "file": "PPRRVU23_OCT.csv",
        "row": 15388,
        "sha256": "6558dc4fa634f462f996db05a7e6af5cbe365e93e508b8e24d1cbfb1f610dcbd"
    },
    "modified_at": "2026-08-04T03:13:13+00:00"
}