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    v1.0.30
    OpenPayerBilling CodesExcision Procedures on the Pelvis and Hip JointCPT cpt-27050-open-sacroiliac-joint-biopsy
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    CPT 27050: Open Biopsy of Sacroiliac Joint Soft Tissue

    Medicare pays $409 on average nationally for this procedure.

    CPT code 27050 describes an open incision and biopsy of the sacroiliac joint soft tissue where the spine meets the pelvis; this is a surgical biopsy procedure performed via an open approach and is typically delivered in an operating room or surgical suite as an inpatient or outpatient surgical service depending on clinical indications.

    For related coverage guidance, see recent payer policy updates: Surgical Procedures, Outpatient Surgical Procedures - Site of Service, Site of Service Ambulatory Service Center (ASC) Select — Surgical or Diagnostic Procedures in Adults.

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    Table of contents

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    Clinical & Coding Specifications

    Clinical Context

    A typical patient is a 45–70 year-old adult presenting with persistent unilateral or bilateral posterior pelvic pain, tenderness over the sacroiliac joint, and limited ambulation despite conservative therapy. Imaging (MRI or CT) shows a suspicious sacroiliac joint lesion or evolving inflammatory change. After discussion, the orthopedic surgeon or interventional pain specialist schedules an open sacroiliac joint biopsy during a brief operative procedure to obtain soft-tissue samples for histopathology and microbiology. The workflow includes preoperative consent, targeted imaging review, brief general or regional anesthesia in an ambulatory surgery center or hospital operating room, a small incision over the sacroiliac joint, blunt and sharp dissection to expose the joint, sampling of soft tissue and synovium, hemostasis, and layered closure. Specimens are sent for frozen section or permanent pathology and culture as indicated. Postoperative care includes short observation, pain control, wound care instructions, and follow-up for pathology results and definitive management planning.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    27050Biopsy, soft tissue of sacroiliac joint (open incision)Primary procedure described; direct sampling of sacroiliac soft tissues for diagnosis.
    19300Biopsy of breast, open; incisionalNot directly related anatomically but similar open biopsy technique and coding considerations when sampling soft tissue lesions.
    27046Incision and drainage, sacroiliac joint, deep abscess or hematomaPerformed when there is an infected collection; may precede or accompany biopsy when abscess is present.
    20220Biopsy of tumor, soft tissue of head and neck; 1st lesionExample of open soft tissue biopsy code family illustrating coding for open soft tissue sampling in other anatomic sites.
    11042Debridement; skin, subcutaneous tissue and muscle, first 20 sq cm or lessMay be reported when significant debridement of infected or necrotic soft tissue around the sacroiliac joint is performed along with biopsy.

    Related Modifiers

    13 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…
    26Modifier 26 (Professional Component) identifies and bills only the professional portion of a split service — the physician’s interpretation, report, and medical judgment — when the technical…- Use CPT Modifier -26 when you are billing only the professional component (PC) of a split‑bill eligible service—i.e., you performed the physician interpretation, medical judgment and prepared a…
    50Modifier –50 (Bilateral Procedure) is appended to a CPT code when an identical procedure is performed on paired anatomical structures during the same operative session. The AMA states to add…- Use modifier -50 when the same CPT surgical, diagnostic, or radiology procedure is performed on paired anatomical structures (both sides of the body) during the same operative/session by the same…
    51Modifier –51 (Multiple Procedures) is used when the same provider performs multiple procedures in the same session to identify secondary, non‑exempt procedures and indicate payment reduction logic…- Use modifier -51 when the same provider performs multiple distinct procedures during the same patient encounter: report the highest‑valued procedure first (no modifier) and append -51 to…
    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…
    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…

    Showing 1–10 of 13

    Related Provider Taxonomies

    8 rows

    Taxonomy Code
    208000000X
    2084P0800X
    207L00000X
    207XX0005X
    207ZF0201X
    374K00000X
    1710I1003X
    314000000X

    Related Payer Policy Updates

    Specialty: General Surgery1 / 2

    10 rows

    PolicyPayerEffective Date
    Surgical ProceduresUnitedHealthcare2026-09-01
    Outpatient Surgical Procedures - Site of ServiceUnitedHealthcare2026-09-01
    Site of Service Ambulatory Service Center (ASC) Select — Surgical or Diagnostic Procedures in AdultsPremera Bluecross2026-09-01
    Site of Service Ambulatory Surgical Center (ASC) Select — Surgical or Diagnostic Procedures in AdultsPremera Bluecross2026-09-01
    Site of Service Ambulatory Service Center (ASC) SelectPremera Bluecross2026-09-01
    Site of Service Ambulatory Surgical Center (ASC) Select — Site of Service for Ambulatory Surgical Procedures (ASC Select)Premera Bluecross2026-09-01
    Site of Service Ambulatory Service Center (ASC) SelectPremera Bluecross2026-09-01
    Outpatient Surgical Procedures - Site of Servicesierra health and life2026-08-01
    Medical Necessity Guidelines — Inpatient Surgical CareMass General Brigham Health Plan2026-08-01
    Ambulatory Surgery Center (ASC) - Site of Care PolicyKaiser Permanente2026-08-01

    Related Codes

    CPT-27040-PELVIC-HIP-SUPERFICIAL-SOFT-TISSUE-BIOPSY

    CPT 27040: Superficial Soft-Tissue Biopsy of Pelvis/Hip

    CPT-27041-DEEP-PELVIC-HIP-SOFT-TISSUE-BIOPSY

    CPT 27041: Deep Subfascial/Intramuscular Soft Tissue Biopsy, Pelvis/Hip

    CPT-27043-PELVIC-HIP-SUBCUTANEOUS-SOFT-TUMOR-EXCISION-3CM-PLUS

    CPT 27043: Excision of Subcutaneous Soft Tissue Tumor, Pelvis/Hip ≥3 cm

    CPT-27045-PELVIS-HIP-INTRAMUSCULAR-SOFT-TISSUE-TUMOR-EXCISION-5CM-OR-GREATER

    CPT 27045: Excision of Intramuscular/Subfascial Soft Tissue Tumor ≥5 cm, Pelvis/Hip

    CPT-27047-PELVIC-HIP-SUBCUTANEOUS-SOFT-TISSUE-TUMOR-EXCISION-LESS-THAN-3CM

    CPT 27047: Excision of Soft Tissue Tumor, Pelvis/Hip, Subcutaneous <3 cm

    CPT-27048-PELVIC-HIP-SUBFASCIAL-SOFT-TISSUE-TUMOR-EXCISION-5CM

    CPT 27048: Excision of Subfascial Soft Tissue Tumor of Pelvis/Hip <5 cm

    CPT-27049-PELVIC-HIP-SOFT-TISSUE-TUMOR-EXCISION-5CM

    CPT 27049: Extensive Excision of Pelvis/Hip Soft-Tissue Tumor (<5 cm)

    CPT-27052-HIP-OPEN-SOFT-TISSUE-BIOPSY

    CPT 27052: Open Biopsy of Hip Soft Tissue

    CPT-27054-OPEN-HIP-SYNOVECTOMY

    CPT 27054: Open Synovectomy of Hip Joint

    CPT-27057-HIP-BUTTOCK-COMPARTMENT-FASCIOTOMY-DEBRIDEMENT

    CPT 27057: Fasciotomy and Debridement, Hip/Buttock Compartment Unilateral

    Showing 1–10 of 23

    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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