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    v1.0.28
    OpenPayerBilling CodesMedical And Surgical SuppliesHCPCS hcpcs-a4400-ostomy-irrigation-set
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    HCPCS A4400: Ostomy Irrigation Set

    HCPCS Level II code A4400 describes an ostomy irrigation set, a durable medical supply used to perform irrigation of a colostomy or other stoma; the service type is ostomy irrigation and the typical site of service is home or outpatient setting where patients or caregivers manage routine stoma care and irrigation procedures.

    For related coverage guidance, see recent payer policy updates: Salivary Hormone Testing, Bone Turnover Markers Testing, Parathyroid Hormone, Phosphorus, Calcium, and Magnesium Testing.

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    Table of contents

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    Clinical & Coding Specifications

    Clinical Context

    A typical patient is an adult with a colostomy or ileostomy who uses an ostomy irrigation program to manage predictable stool output. The patient presents to an outpatient wound, ostomy, and continence (WOC) clinic or home health visit for training and provision of supplies. The ostomy irrigation set A4400 is used during supervised irrigation teaching or demonstration: the clinician assembles the irrigation bag, cone, tubing, and collection sleeve; explains infection-control hand hygiene; demonstrates gentle instillation of room-temperature water; monitors patient comfort and stoma effluent; and instructs on disposal and follow-up. Documentation includes indication for irrigation (e.g., colon diversion with continent effluent), patient tolerance, any complications (cramping, bleeding), items provided (quantity of A4400 sets), and education completed. Typical site of service is outpatient clinic, home health visit, or skilled nursing facility where ongoing ostomy management occurs.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    99401Preventive medicine counseling, individual, approximately 15 minutesUsed for brief ostomy irrigation education and counseling during an outpatient visit
    99406Smoking and tobacco use cessation counseling, intermediate, 3-10 minutesData not directly related; included only if tobacco cessation counseling is provided during the same visit (Note: if not actually applicable, do not report)
    99070Supplies and materials (except spectacles), provided by physician over and above those usually included with office visitUse when reporting additional supplies furnished to the patient beyond standard clinic provisions, such as multiple A4400 sets
    G0156Physician or other qualified health professional oversight in home healthUse when oversight includes education and supply coordination during a home health episode
    97597Debridement (selective), open wound, first 20 sq cm or lessMay be performed by WOC nurses at the same visit for peristomal skin complications that require debridement

    Related Modifiers

    8 rows

    ModifierDescriptionWhen to Use
    59Modifier 59 indicates a distinct procedural service when two procedures that are not normally billed together are clinically and procedurally separate. The CPT definition (as reiterated by CMS)…- Use modifier -59 to report a distinct procedural service when documentation supports that the procedure reported is not normally billed together with another service on the same day because of a…
    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…
    76Modifier -76, Repeat Procedure or Service by Same Physician or Other Qualified Health Care Professional, is appended when the same provider performs an identical, medically necessary procedure or…- Use modifier -76 when the same physician or other qualified health care professional performs an identical procedure or service a second (or subsequent) time on the same date of service and the…
    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 CodeSpecialtyNotes
    251B00000XCase Management AgencyAn organization that is responsible for providing case management services. The agency provides services which assist an individual in gaining access…
    363L00000XNurse Practitioner(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision mak…
    207Q00000XFamily Medicine PhysicianFamily Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadt…
    2083S0010XSports Medicine (Preventive Medicine) PhysicianA preventive medicine physician who specializes in the diagnosis and treatment of sports related conditions and injuries.
    2084E0001XEpilepsy PhysicianEpilepsy is a subspecialty of neurology focused on the diagnosis and treatment of patients with epilepsy, including new-onset, medically refractory ep…
    283XC2000XChildren's Rehabilitation HospitalHospitals · Rehabilitation Hospital
    163WP0807XChild & Adolescent Psychiatric/Mental Health Registered NurseNursing Service Providers · Registered Nurse
    251J00000XNursing Care AgencyA Nursing Care Agency is an entity that provides skilled nursing care through the services of a Registered Nurse (RN) or a Licensed Practical Nurse (L…

    Related ICD-10-CM Codes

    28 rows

    ICD-10-CM CodeDescription
    C18.9Malignant neoplasm of colon, unspecified
    C19Malignant neoplasm of rectosigmoid junction
    C20Malignant neoplasm of rectum
    E86.0Dehydration
    K51.90Ulcerative colitis, unspecified, without complications
    K51.919Ulcerative colitis, unspecified with unspecified complications
    K52.9Noninfective gastroenteritis and colitis, unspecified
    K55.9Vascular disorder of intestine, unspecified
    K57.30Diverticulosis of large intestine without perforation or abscess without bleeding
    K57.50Diverticulosis of both small and large intestine without perforation or abscess without bleeding

    Showing 1–10 of 28

    Related Payer Policy Updates

    Specialty: Endocrinology1 / 3

    5 rows

    PolicyPayerEffective Date
    Salivary Hormone TestingOscar Health2026-10-01
    Bone Turnover Markers TestingOscar Health2026-10-01
    Parathyroid Hormone, Phosphorus, Calcium, and Magnesium TestingOscar Health2026-10-01
    Testosterone — Coverage Criteria for Measurement and MonitoringOscar Health2026-10-01
    Thyroid Disease TestingOscar Health2026-10-01

    Related Codes

    HCPCS-A4206-STERILE-SYRINGE-1CC-NEEDLE

    HCPCS A4206: Syringe with Needle, 1 cc or Less, Sterile

    HCPCS-A4207-STERILE-2CC-SYRINGE-WITH-NEEDLE

    HCPCS Level II A4207: Syringe with Needle, Sterile 2 cc

    HCPCS-A4208-STERILE-3CC-SYRINGE-WITH-NEEDLE

    HCPCS Level II A4208: Syringe with Needle, Sterile 3 cc

    HCPCS-A4209-STERILE-SYRINGE-WITH-NEEDLE-5CC-OR-GREATER

    HCPCS Level II A4209: Syringe with Needle, Sterile 5 cc or Greater

    HCPCS-A4210-NEEDLE-FREE-INJECTION-DEVICE

    HCPCS Level II A4210: Needle-free Injection Device, Each

    HCPCS-A4211-SUPPLIES-SELF-ADMINISTERED-INJECTIONS

    HCPCS Level II A4211: Supplies for Self-Administered Injections

    HCPCS-A4212-NON-CORING-NEEDLE-STYLET-CATHETER-ACCESS-SUPPLY

    HCPCS Level II A4212: Non-coring Needle or Stylet with/without Catheter

    HCPCS-A4213-STERILE-SYRINGE-20CC-OR-GREATER

    HCPCS Level II A4213: Syringe, Sterile, 20 cc or Greater, Each

    HCPCS-A4215-STERILE-NEEDLE-SINGLE-EACH

    HCPCS Level II A4215: Needle, Sterile, Any Size

    HCPCS-A4216-STERILE-DILUENT-FLUSH-10ML

    HCPCS Level II A4216: Sterile Diluent/Flush, 10 ml

    Showing 1–10 of 633

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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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