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    OpenPayerBilling CodesTemporary CodesHCPCS hcpcs-q9997-ustekinumab-pyzchiva-intravenous-injection-1mg
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    HCPCS Level II Q9997: Ustekinumab-ttwe (Pyzchiva) Injection, IV, 1 mg

    HCPCS Level II code Q9997 describes an intravenous injection of ustekinumab-ttwe (Pyzchiva) billed per 1 mg; this code is used when the biologic is administered IV in an infusion center, hospital outpatient department, or similar clinical setting and is intended to document the specific drug formulation and quantity for medical billing and claims processing.

    For related coverage guidance, see recent payer policy updates: Truvada (Emtricitabine and Tenofovir Disoproxil Fumarate) for HIV Prevention and Treatment, HIV/AIDS Pharmacologic Prevention and Treatment, Long-Acting Injectable Antiretroviral Agents for HIV.

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    Clinical & Coding Specifications

    Clinical Context

    A typical patient is an adult with moderate-to-severe Crohn disease or ulcerative colitis who requires intravenous induction dosing of ustekinumab-ttwe (Q9997) prior to subcutaneous maintenance. The patient presents to an outpatient infusion center or hospital outpatient department for a single intravenous administration calculated by weight (documented as 1 mg units billed via Q9997). The clinical workflow includes verification of prescription and weight-based dose, pre-infusion nursing assessment (vital signs, allergy check, review of concurrent medications and tuberculosis screening status), insertion of peripheral IV access, administration of the reconstituted biologic per manufacturer guidance, monitoring for infusion reactions during and for at least 30–60 minutes post-infusion, documentation of lot number and expiration, and billing of the appropriate HCPCS J- or Q-code for the amount administered along with facility and administration services. Typical site of service is an outpatient infusion center, hospital outpatient department, or specialty infusion clinic. Common patient modifiers applied to claims reflect bilateral procedures, unusual services, or patient status events as clinically appropriate.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    36415Collection of venous blood by venipuncturePerformed prior to infusion for baseline labs (CBC, CMP, therapeutic drug monitoring).

    96365 | Intravenous infusion, for therapy, prophylaxis, or diagnosis; initial, up to 1 hour | Billed for professional administration time of the IV infusion when applicable and payer allows separate administration billing alongside the drug.

    96366 | Intravenous infusion, each additional hour (list separately in addition to code for primary service) | Used if infusion duration exceeds the initial hour and payer allows additional time codes.

    96374 | Therapeutic, prophylactic, or diagnostic injection (specify substance or drug), intravenous push, single or initial substance/drug | Rarely used for large-volume biologic IV infusions but may be used for small-volume IV push medications given during infusion encounter.

    99070 | Supplies and materials (e.g., bandages, IV tubing), used during infusion, when not separately reimbursed | Billed by facility for expendable supplies associated with IV biologic administration.

    Related Modifiers

    11 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…
    80CPT® Modifier 80 (Assistant Surgeon) is appended to a surgical CPT code when a physician (MD or DO) provides full, continuous assistance throughout the operative procedure. It is intended only for…- Use CPT Modifier -80 when a physician (MD or DO) serves as an assistant surgeon and provides full, continuous assistance throughout the entire operative procedure; append -80 to the surgical CPT…

    Showing 1–10 of 11

    Related Provider Taxonomies

    8 rows

    Taxonomy Code
    364S00000X
    207P00000X
    207L00000X
    163W00000X
    282N00000X
    2471V0105X
    364SP0813X
    251F00000X

    Related Payer Policy Updates

    Specialty: Infectious Disease1 / 3

    10 rows

    PolicyPayerEffective Date
    Truvada (Emtricitabine and Tenofovir Disoproxil Fumarate) for HIV Prevention and Treatmentpremerabluecrossofwashington2026-10-01
    HIV/AIDS Pharmacologic Prevention and Treatmentpremerabluecrossofwashington2026-10-01
    Long-Acting Injectable Antiretroviral Agents for HIVColorado Rocky Mountain Health Plans2026-10-01
    B-Hemolytic Streptococcus TestingOscar Health2026-10-01
    Human Immunodeficiency Virus (HIV) — Coverage Criteria for Testing and Resistance AssaysOscar Health2026-10-01
    Hepatitis Testing (A, B, C, D) Coverage CriteriaOscar Health2026-10-01
    Lyme Disease Testing Coverage CriteriaOscar Health2026-10-01
    Pathogen Panel TestingOscar Health2026-10-01
    Diagnostic Testing of Common Sexually Transmitted InfectionsOscar Health2026-10-01
    Testing for Diagnosis of Active or Latent TuberculosisOscar Health2026-10-01

    Related Codes

    HCPCS-LEVEL-II-Q4139-INJECTABLE-AMNIOMATRIX-BIODMATRIX-1-CC

    HCPCS Q4139: Amniomatrix or Biodmatrix, Injectable, 1 cc

    HCPCS-LEVEL-II-Q4256-AREA-BASED-PROCEDURAL-ADD-ON-PER-SQ-CM

    HCPCS Q4256: MLG-complete Skin Graft Material, Per Sq Cm

    HCPCS-LEVEL-II-Q5132-ADALIMUMAB-AFZB-ABRILADA-10MG-INJECTION

    HCPCS Level II Q5132: Injection, adalimumab-afzb (Abrilada), 10 mg

    HCPCS-Q0035-CARDIOKYMOGRAPHY-CARDIAC-MOTION-RECORDING

    HCPCS Level II Q0035: Cardiokymography

    HCPCS-Q0081-INFUSION-THERAPY-NON-CHEMOTHERAPEUTIC-PER-VISIT

    HCPCS Level II Q0081: Infusion Therapy, Non‑Chemotherapeutic, Per Visit

    HCPCS-Q0083-CHEMOTHERAPY-NON-INFUSION-ADMINISTRATION

    HCPCS Q0083: Chemotherapy Administration, Non-Infusion Methods

    HCPCS-Q0084-CHEMOTHERAPY-INFUSION-ADMINISTRATION-PER-VISIT

    HCPCS Q0084: Chemotherapy Infusion Administration, Per Visit

    HCPCS-Q0085-CHEMOTHERAPY-INFUSION-PLUS-OTHER-TECHNIQUES-PER-VISIT

    HCPCS Q0085: Chemotherapy Infusion Plus Other Technique(s), Per Visit

    HCPCS-Q0091-PAP-SMEAR-SPECIMEN-COLLECTION-TRANSPORT

    HCPCS Q0091: Screening Papanicolaou Smear Collection and Transport

    HCPCS-Q0092-PORTABLE-XRAY-EQUIPMENT-SETUP

    HCPCS Q0092: Set-up Portable X-ray Equipment

    Showing 1–10 of 629

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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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