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ICD-10-PCS 2027 procedure code

0GN00ZZRelease Pituitary Gland, Open Approach

✓ Valid for 2027O.R. procedure

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 0GN00ZZ

0GN00ZZ is the ICD-10-PCS code for a release procedure on the pituitary gland using an open approach. In ICD-10-PCS, release means freeing a body part from an abnormal physical constraint by cutting or by the use of force.

In plain terms, this corresponds to other operations on hypophysis, the ICD-9-CM procedure title it maps to (07.79).

For a different body part, codes include 0GN10ZZ (pineal body), 0GN20ZZ (left adrenal gland), 0GN30ZZ (right adrenal gland), 0GN40ZZ (bilateral adrenal glands), 0GN60ZZ (left carotid body), 0GN70ZZ (right carotid body) and 15 more.

The same procedure with a different approach is coded 0GN03ZZ (percutaneous) and 0GN04ZZ (percutaneous endoscopic).

It is an operating-room procedure in the MS-DRG logic for DRG 023 (Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis with MCC or Antineoplastic Implant or Epilepsy with Neurostimulator), DRG 024 (Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis without MCC), DRG 025 (Craniotomy and Endovascular Intracranial Procedures with MCC), DRG 026 (Craniotomy and Endovascular Intracranial Procedures with CC), DRG 027 (Craniotomy and Endovascular Intracranial Procedures without CC/MCC) and DRG 579 (Other Skin, Subcutaneous Tissue and Breast Procedures with MCC), under the surgical categories “Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis”, “Craniotomy and endovascular intracranial procedures”, “Other Skin, Subcutaneous Tissue and Breast Procedures” 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
GEndocrine System
3. Operation
NRelease

Freeing a body part from an abnormal physical constraint by cutting or by the use of force

Some of the restraining tissue may be taken out but none of the body part is taken out

Includes: Adhesiolysis, carpal tunnel release

4. Body Part
0Pituitary Gland

Includes: Adenohypophysis; Hypophysis; Neurohypophysis

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
ZNo 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 10 · Endocrine, Nutritional and Metabolic Diseases and Disorders · Adrenal and Pituitary Procedures

ICD-9-CM equivalent

Converter →
  • 07.79Other operations on hypophysisapproximate

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 0GN00ZZ

Is 0GN00ZZ a valid ICD-10-PCS code for 2027?

Yes. 0GN00ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 0GN00ZZ an O.R. procedure?

Yes. 0GN00ZZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 0GN00ZZ group to?

Depending on the principal diagnosis, 0GN00ZZ can group to MS-DRG 023, MS-DRG 024, MS-DRG 025, MS-DRG 026, MS-DRG 027 and MS-DRG 579.

What is the ICD-9 procedure code for 0GN00ZZ?

The CMS GEMs map 0GN00ZZ to ICD-9-CM 07.79 (Other operations on hypophysis).