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ICD-10-PCS 2027 procedure code

0GNM0ZZRelease Left Superior Parathyroid 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 0GNM0ZZ

0GNM0ZZ is the ICD-10-PCS code for a release procedure on the left superior parathyroid 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 parathyroid glands, the ICD-9-CM procedure title it maps to (06.99).

For a different body part, codes include 0GN00ZZ (pituitary gland), 0GN10ZZ (pineal body), 0GN20ZZ (left adrenal gland), 0GN30ZZ (right adrenal gland), 0GN40ZZ (bilateral adrenal glands), 0GN60ZZ (left carotid body) and 15 more.

The same procedure with a different approach is coded 0GNM3ZZ (percutaneous) and 0GNM4ZZ (percutaneous endoscopic).

It is an operating-room procedure in the MS-DRG logic for DRG 625 (Thyroid, Parathyroid and Thyroglossal Procedures with MCC), DRG 626 (Thyroid, Parathyroid and Thyroglossal Procedures with CC) and DRG 627 (Thyroid, Parathyroid and Thyroglossal Procedures without CC/MCC), under the surgical category “Thyroid, Parathyroid and Thyroglossal Procedures”.

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
MSuperior Parathyroid Gland, Left
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.

ICD-9-CM equivalent

Converter →
  • 06.99Other operations on parathyroid glandsapproximate

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 0GNM0ZZ

Is 0GNM0ZZ a valid ICD-10-PCS code for 2027?

Yes. 0GNM0ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 0GNM0ZZ an O.R. procedure?

Yes. 0GNM0ZZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 0GNM0ZZ group to?

Depending on the principal diagnosis, 0GNM0ZZ can group to MS-DRG 625, MS-DRG 626 and MS-DRG 627.

What is the ICD-9 procedure code for 0GNM0ZZ?

The CMS GEMs map 0GNM0ZZ to ICD-9-CM 06.99 (Other operations on parathyroid glands).