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    v1.0.28
    OpenPayerBilling CodesDurable medical equipment (DME) Medicare administrative contractors (MACs)HCPCS hcpcs-k0553-therapeutic-continuous-glucose-monitor-supply-allowance
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    HCPCS K0553: Supply Allowance for Therapeutic Continuous Glucose Monitor

    HCPCS Level II code K0553 describes a supply allowance for a therapeutic continuous glucose monitor (CGM); it covers all supplies and accessories needed for the device with service type defined as durable medical device supply provision, and the typical site of service is home use or outpatient outpatient supply distribution where a one month supply equals one unit of service.

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    Clinical & Coding Specifications

    Clinical Context

    A typical patient is an adult or pediatric patient with insulin-dependent diabetes mellitus requiring a therapeutic continuous glucose monitor (CGM) to guide insulin dosing and glycemic management. The clinician (endocrinologist, diabetologist, or certified diabetes educator) prescribes a therapeutic CGM when frequent real-time glucose data are needed to adjust insulin pump settings, dose insulin injections, or manage recurrent hypoglycemia or hyperglycemia.

    Workflow: The provider documents medical necessity, selects K0553 for the monthly supply allowance, and sends the prescription to the durable medical equipment supplier or pharmacy. The supplier dispenses a one-month supply of CGM supplies and accessories (sensors, transmitter components, adhesives, and related disposables). Follow-up visits occur at routine diabetes visits or sooner for device troubleshooting; supplies are billed monthly as units of service (1 unit = 1 month).

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    95249Ambulatory continuous glucose monitoring of interstitial tissue fluid via a subcutaneous sensor for a minimum of 72 hours; interpretation and report by a physician or other qualified health care professionalOften performed when initiating or reviewing therapeutic CGM data; interpretation informs supply needs and prescription adjustments.
    95250Ambulatory continuous glucose monitoring of interstitial tissue fluid via a subcutaneous sensor for a minimum of 72 hours; technical recording, sensor placement, hookup, calibration and removal of monitor, and download of dataBilled by the supplier or facility when providing technical services that accompany sensor placement and data capture; complements monthly supply billing K0553.
    99457Remote physiologic monitoring treatment management services, clinical staff/physician/other qualified health care professional time in a calendar month requiring interactive communication with the patient/caregiver during the month; first 20 minutesUsed when clinicians provide remote monitoring and management based on CGM data generated by supplies billed under K0553.
    99458Remote physiologic monitoring treatment management services; each additional 20 minutesBilled in addition to 99457 when more time is required to manage CGM-derived data.
    99091Collection and interpretation of physiologic data digitally stored and/or transmitted by the patient and/or caregiver to the physician or other qualified health care professional, requiring a minimum of 30 minutes of timeApplicable for CGM data review and decision-making in a clinical workflow alongside ongoing supply provision.

    Related Modifiers

    8 rows

    ModifierDescriptionWhen to Use
    22Modifier –22 (Increased Procedural Services) is used when a reported procedure is substantially more extensive than normally required. The CPT Manual and CMS state it may be appended only when the…- When to use: Append modifier -22 to a procedural CPT code when the service performed is substantially more extensive than the usual service described by that code — i.e., the procedure required…
    23Modifier -23 (Unusual Anesthesia) is used on anesthesia service CPT codes when a procedure that normally requires no anesthesia or only local anesthesia must be performed under general anesthesia…- Use modifier -23 only on anesthesia CPT codes (00100–01999) when a procedure that normally requires no anesthesia or only local anesthesia must be performed under general anesthesia because of…
    52Modifier ‑52 (Reduced Services) indicates that a service or procedure was partially reduced or omitted at the provider’s discretion, allowing reporting of the basic procedure number with a qualifier…- Use modifier -52 when a physician or qualified health professional electively reduces or omits part of a procedure or service (for example, performing fewer required views or omitting a portion of…
    53Modifier 53 (Discontinued Procedure) signals that a surgical or diagnostic service was begun by the physician but terminated because of extenuating circumstances that threatened the patient’s…- Use modifier -53 when a physician/qualified healthcare professional has started a surgical or diagnostic procedure (e.g., anesthesia administered, incision or scope insertion) and then discontinues…
    54Modifier ‑54 (“Surgical care only”) is appended to a CPT surgical procedure when the reporting surgeon performs the intraoperative (surgical) component but does not furnish the preoperative and/or…- Use modifier -54 when the reporting surgeon provided only the intraoperative (surgical) component of a procedure and preoperative and/or postoperative management has been or will be provided by…
    55Modifier –55 indicates the billing provider furnished only postoperative management for a procedure that has a global surgical period. According to AAPC, this modifier is appended to the same CPT…- Use modifier -55 when billing the same CPT surgical code that has a 10- or 90-day global period and you, as a provider other than the original surgeon, furnished ONLY postoperative management (no…
    56Modifier ‑56 indicates the reporting provider furnished only the preoperative management for a surgical procedure and did not perform the intraoperative or postoperative care. It is used in…- Use Modifier -56 when a provider performs only the preoperative management in a split‑care situation (one physician manages preop care while a different physician performs the intraoperative…
    62Modifier 62 indicates that two surgeons function as co‑surgeons, each performing distinct parts of the same primary surgical procedure. It is appended to the primary procedure code (and any…- Use modifier -62 when two surgeons act as co‑surgeons (both primary surgeons) on a single definitive primary procedure, each performing distinct parts of the same surgical procedure (append -62 to…

    Related Provider Taxonomies

    8 rows

    Taxonomy CodeSpecialtyNotes
    208000000XPediatrics PhysicianA pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectru…
    333600000XPharmacyA facility used by pharmacists for the compounding and dispensing of medicinal preparations and other associated professional and administrative servi…
    103T00000XPsychologistA psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, a…
    207RH0000XHematology (Internal Medicine) PhysicianAn internist with additional training who specializes in diseases of the blood, spleen and lymph. This specialist treats conditions such as anemia, cl…
    133VN1004XPediatric Nutrition Registered DietitianAn individual who is a Board Certified Specialist in Pediatric Nutrition and applies evidence-based nutrition knowledge in providing medical nutrition…
    164W00000XLicensed Practical NurseAn individual with post-high school vocational training and practical experience in the provision of nursing care at a level less than that required f…
    171R00000XInterpreterAn Interpreter is a person who translates oral communication between two or more people. This includes translating from one language to another or in…
    246QC1000XChemistry Pathology Specialist/TechnologistTechnologists, Technicians & Other Technical Service Providers · Specialist/Technologist, Pathology

    Related Codes

    HCPCS-K0001-STANDARD-WHEELCHAIR-DURABLE-MEDICAL-EQUIPMENT

    HCPCS K0001: Standard Wheelchair

    HCPCS-K0002-STANDARD-HEMI-LOW-SEAT-WHEELCHAIR

    HCPCS K0002: Standard Hemi (Low Seat) Wheelchair

    HCPCS-K0003-LIGHTWEIGHT-WHEELCHAIR

    HCPCS K0003: Lightweight Wheelchair

    HCPCS-K0004-HIGH-STRENGTH-LIGHTWEIGHT-WHEELCHAIR

    HCPCS K0004: High Strength, Lightweight Wheelchair

    HCPCS-K0005-ULTRALIGHTWEIGHT-WHEELCHAIR

    HCPCS Level II K0005: Ultralightweight Wheelchair

    HCPCS-K0006-HEAVY-DUTY-WHEELCHAIR

    HCPCS Level II K0006: Heavy Duty Wheelchair

    HCPCS-K0007-EXTRA-HEAVY-DUTY-WHEELCHAIR

    HCPCS Level II K0007: Extra Heavy Duty Wheelchair

    HCPCS-K0008-CUSTOM-MANUAL-WHEELCHAIR

    HCPCS K0008: Custom Manual Wheelchair/Base

    HCPCS-K0009-OTHER-MANUAL-WHEELCHAIR-BASE

    HCPCS K0009: Other Manual Wheelchair/Base

    HCPCS-K0010-STANDARD-WEIGHT-FRAME-POWER-WHEELCHAIR

    HCPCS K0010: Standard Weight Frame Motorized/Power Wheelchair

    Showing 1–10 of 135

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    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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