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ICD-10-PCS 2027 procedure code

0SG504ZFusion of Sacrococcygeal Joint with Internal Fixation Device, Open Approach

✓ Valid for 2027O.R. procedure

Short description: Fusion of Sacrococcygeal Joint with Int Fix, Open Approach

Code unchanged since ICD-10-PCS took effect on October 1, 2015. Source: official FY2027 ICD-10-PCS release from CMS. Page updated September 29, 2026. About our data

About 0SG504Z

0SG504Z is the ICD-10-PCS code for a fusion procedure on the sacrococcygeal joint using an open approach with internal fixation device. In ICD-10-PCS, fusion means joining together portions of an articular body part rendering the articular body part immobile.

In plain terms, this corresponds to spinal fusion, not otherwise specified, the ICD-9-CM procedure title it maps to (81.00).

For a different body part, codes include 0SG704Z (right sacroiliac joint), 0SG804Z (left sacroiliac joint), 0SG904Z (right hip joint), 0SGB04Z (left hip joint), 0SGC04Z (right knee joint), 0SGD04Z (left knee joint) and 10 more.

The same procedure with a different approach is coded 0SG534Z (percutaneous) and 0SG544Z (percutaneous endoscopic).

With a different device, use 0SG507Z (autologous tissue substitute), 0SG50JZ (synthetic substitute) and 0SG50KZ (nonautologous tissue substitute).

It is an operating-room procedure in the MS-DRG logic for DRG 028 (Spinal Procedures with MCC), DRG 029 (Spinal Procedures with CC or Spinal Neurostimulators), DRG 030 (Spinal Procedures without CC/MCC), DRG 447 (Multiple Level Spinal Fusion Except Cervical with MCC), DRG 448 (Multiple Level Spinal Fusion Except Cervical without MCC) and DRG 450 (Single Level Spinal Fusion Except Cervical with MCC), under the surgical categories “Spinal Procedures”, “Multiple Level Spinal Fusion Except Cervical”, “Single Level Spinal Fusion Except Cervical” and 3 more.

It has been valid since ICD-10-PCS took effect on October 1, 2015.

What each character means

1. Section
0Medical and Surgical
2. Body System
SLower Joints
3. Operation
GFusion

Joining together portions of an articular body part rendering the articular body part immobile

The body part is joined together by fixation device, bone graft, or other means

Includes: Spinal fusion, ankle arthrodesis

4. Body Part
5Sacrococcygeal Joint

Includes: Sacrococcygeal symphysis

5. Approach
0Open

Cutting through the skin or mucous membrane and any other body layers necessary to expose the site of the procedure

6. Device
4Internal Fixation Device
7. Qualifier
ZNo Qualifier

Other versions of this procedure

MS-DRG v44.0 grouping

All DRGs →

Surgical MS-DRGs this procedure can group to, depending on the principal diagnosis's MDC.

MDC 08 · Diseases and Disorders of the Musculoskeletal System and Connective Tissue · Multiple Level Spinal Fusion Except Cervical

MDC 08 · Diseases and Disorders of the Musculoskeletal System and Connective Tissue · Single Level Spinal Fusion Except Cervical

ICD-9-CM equivalent

Converter →
  • 81.00Spinal fusion, not otherwise specifiedapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about 0SG504Z

Is 0SG504Z a valid ICD-10-PCS code for 2027?

Yes. 0SG504Z is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 0SG504Z an O.R. procedure?

Yes. 0SG504Z is an O.R. procedure in MS-DRG v44.0.

What DRG does 0SG504Z group to?

Depending on the principal diagnosis, 0SG504Z can group to MS-DRG 028, MS-DRG 029, MS-DRG 030, MS-DRG 447, MS-DRG 448 and MS-DRG 450.

What is the ICD-9 procedure code for 0SG504Z?

The CMS GEMs map 0SG504Z to ICD-9-CM 81.00 (Spinal fusion, not otherwise specified).