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ICD-10-PCS 2027 procedure code

08123Z4Bypass Right Anterior Chamber to Sclera, Percutaneous Approach

✓ Valid for 2027O.R. procedure

Short description: Bypass Right Anterior Chamber to Sclera, Perc 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 08123Z4

08123Z4 is the ICD-10-PCS code for a bypass procedure on the right anterior chamber using a percutaneous approach (qualifier: sclera). In ICD-10-PCS, bypass means altering the route of passage of the contents of a tubular body part.

In plain terms, this corresponds to other scleral fistulization with iridectomy, the ICD-9-CM procedure title it maps to (12.65).

For a different body part, codes include 08133Z4 (left anterior chamber).

With a different device, use 08123J4 (synthetic substitute) and 08123K4 (nonautologous tissue substitute).

It is an operating-room procedure in the MS-DRG logic for DRG 116 (Intraocular Procedures with CC/MCC), DRG 117 (Intraocular Procedures without CC/MCC), DRG 628 (Other Endocrine, Nutritional and Metabolic O.R. Procedures with MCC or Insertion of Antibiotic-eluting Bone Void Filler), DRG 629 (Other Endocrine, Nutritional and Metabolic O.R. Procedures with CC), DRG 630 (Other Endocrine, Nutritional and Metabolic O.R. Procedures without CC/MCC) and DRG 907 (Other O.R. Procedures for Injuries with MCC), under the surgical categories “Intraocular Procedures”, “Other Endocrine, Nutritional and Metabolic O.R. Procedures”, “Other O.R. Procedures for Injuries” and 1 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
8Eye
3. Operation
1Bypass

Altering the route of passage of the contents of a tubular body part

Rerouting contents of a body part to a downstream area of the normal route, to a similar route and body part, or to an abnormal route and dissimilar body part. Includes one or more anastomoses, with or without the use of a device

Includes: Coronary artery bypass, colostomy formation

4. Body Part
2Anterior Chamber, Right
5. Approach
3Percutaneous

Entry, by puncture or minor incision, of instrumentation through the skin or mucous membrane and any other body layers necessary to reach the site of the procedure

6. Device
ZNo Device
7. Qualifier
4Sclera

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 02 · Diseases and Disorders of the Eye · Intraocular Procedures

ICD-9-CM equivalent

Converter →
  • 12.65Other scleral fistulization with iridectomyapproximate

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 08123Z4

Is 08123Z4 a valid ICD-10-PCS code for 2027?

Yes. 08123Z4 is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 08123Z4 an O.R. procedure?

Yes. 08123Z4 is an O.R. procedure in MS-DRG v44.0.

What DRG does 08123Z4 group to?

Depending on the principal diagnosis, 08123Z4 can group to MS-DRG 116, MS-DRG 117, MS-DRG 628, MS-DRG 629, MS-DRG 630 and MS-DRG 907.

What is the ICD-9 procedure code for 08123Z4?

The CMS GEMs map 08123Z4 to ICD-9-CM 12.65 (Other scleral fistulization with iridectomy).