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    v1.0.30
    OpenPayerBilling CodesAdministrative, Miscellaneous and InvestigationalHCPCS hcpcs-a9156-oral-mucoadhesive-per-1ml
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    HCPCS Level II A9156: Oral Mucoadhesive, Per 1 ml

    HCPCS Level II code A9156 describes an oral mucoadhesive product (liquid, gel, paste, or similar) billed per 1 ml and is used to provide topical mucosal adhesion for oral lesions or symptomatic relief; service type is topical oral pharmaceutical application, and the typical site of service is dental clinics, outpatient clinics, or other ambulatory care settings where topical oral treatments are applied.

    For related coverage guidance, see recent payer policy updates: Hospital Beds Corporate Medical Policy, Patient Lifts, Home Non-Invasive Positive Pressure Ventilation (NIPPV) Devices for Respiratory Insufficiency and Failure.

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    Clinical & Coding Specifications

    Clinical Context

    A typical patient is an adult or pediatric patient presenting with painful oral mucosal lesions (for example, chemotherapy- or radiation-induced oral mucositis, aphthous ulcers, oral lichen planus flare, or mucosal injury from trauma) requiring localized topical therapy. The clinician (often a dentist, oral surgeon, ENT specialist, oncologist, or primary care provider) evaluates the oral cavity, documents lesion location, size, severity, pain level, and prior treatments. When topical mucoadhesive therapy is indicated, the provider prescribes or administers an oral mucoadhesive formulation (liquid, gel, paste) and documents the volume used in milliliters for billing as A9156 per 1 ml. Typical workflow steps include assessment, informed consent (if needed), selection of product and dose, application (in-office direct application or dispensing with administration instructions), and documentation of clinical response and follow-up plan. Common sites of service include outpatient clinic, dental office, oncology infusion center, and ambulatory surgical centers for cases associated with procedural mucosal injury.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    43239Esophagoscopy, flexible, transoral; with biopsy, single or multipleUsed when evaluation of upper aerodigestive mucosa is required prior to topical oral therapy (rarely performed with oral mucoadhesive).
    41899Unlisted procedure, dentoalveolar structuresMay be used for adjunctive unlisted minor oral procedures performed in conjunction with mucoadhesive application when no specific code exists.
    99070Supplies and materials (except spectacles), provided by the physician over and above those usually included with the office visit or procedureUsed when billing for additional non-covered supplies associated with application of topical mucoadhesive (site-specific supply charges).
    99213Office or other outpatient visit for the evaluation and management of an established patient, low to moderate complexityCommon E/M code for assessment and management visit during which mucoadhesive is prescribed or applied.
    99214Office or other outpatient visit for the evaluation and management of an established patient, moderate to high complexityUsed when the encounter requires a higher level of medical decision-making or expanded documentation before mucoadhesive therapy.

    Related Modifiers

    9 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…
    78CPT modifier -78 indicates an unplanned, related return to the operating or procedure room by the same provider during the global postoperative period. It is appended when treatment for a…- Use modifier -78 when an unplanned, related complication during the original procedure’s global postoperative period requires the patient to return to a formal operating or procedure room and the…

    Related Provider Taxonomies

    8 rows

    Taxonomy Code
    103K00000X
    122300000X
    207P00000X
    208D00000X
    2278C0205X
    133VN1201X
    207SG0207X
    2278G0305X

    Related Payer Policy Updates

    Specialty: Durable Medical Equipment (DME)1 / 3

    10 rows

    PolicyPayerEffective Date
    Hospital Beds Corporate Medical Policybcbsvermont2027-01-01
    Patient Liftsuniverahealthcare2026-11-16
    Home Non-Invasive Positive Pressure Ventilation (NIPPV) Devices for Respiratory Insufficiency and Failureexcellus_health_plan_inc2026-10-15
    Positive Airway Pressure Devices for Pulmonary Disorders Continued RentalCareSource Georgia2026-10-01
    Bone Growth StimulatorsProvidence Health Plan2026-10-01
    Durable Medical Equipment (DME) Medical Necessity and CoverageMass General Brigham Health Plan2026-10-01
    Speech Generating DevicesMass General Brigham Health Plan2026-10-01
    Interferential Stimulation Devices (for home use)Moda Health2026-10-01
    Durable Medical Equipment (DME): Tumor Treating Fields (Alternating Electric Field Therapy) Medical GuidelineWPS Health Insurance2026-10-01
    Durable Medical Equipment (DME): Bone Growth Stimulators Medical GuidelineWPS Health Insurance2026-10-01

    Related Codes

    HCPCS-A9150-NON-PRESCRIPTION-DRUGS

    HCPCS Level II A9150: Non-prescription Drugs

    HCPCS-A9152-SINGLE-ORAL-VITAMIN-MINERAL-DOSE

    HCPCS A9152: Single Oral Vitamin/Mineral/Trace Element

    HCPCS-A9153-MULTIVITAMIN-ORAL-PER-DOSE

    HCPCS A9153: Multiple Vitamins, Oral, Per Dose

    HCPCS-A9154-ARTIFICIAL-SALIVA-1ML

    HCPCS Level II A9154: Artificial saliva, 1 ml

    HCPCS-A9155-ARTIFICIAL-SALIVA-30ML

    HCPCS Level II A9155: Artificial Saliva, 30 mL

    HCPCS-A9180-PEDICULOSIS-TOPICAL-TREATMENT-PATIENT-ADMINISTRATION

    HCPCS Level II A9180: Pediculosis Topical Treatment for Patient/Caretaker

    HCPCS-A9268-PROGRAMMER-TRANSIENT-INGESTED-CAPSULE

    HCPCS Level II A9268: Programmer for Transient Orally Ingested Capsule

    HCPCS-A9269-PROGRAMMABLE-TRANSIENT-ORAL-CAPSULE

    HCPCS Level II A9269: Programmable Orally Ingested Capsule, Per Month

    HCPCS-A9270-NON-COVERED-ITEM-OR-SERVICE

    HCPCS A9270: Non-covered Item or Service

    HCPCS-A9272-DISPOSABLE-WOUND-SUCTION-DEVICE-KIT

    HCPCS Level II A9272: Wound Suction, Disposable, Complete Kit

    Showing 1–10 of 138

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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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