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ICD-10-PCS 2027 procedure code

0GNM4ZZRelease Left Superior Parathyroid Gland, Percutaneous Endoscopic Approach

✓ Valid for 2027O.R. procedure

Short description: Release Left Superior Parathyroid Gland, Perc Endo 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 0GNM4ZZ

0GNM4ZZ is the ICD-10-PCS code for a release procedure on the left superior parathyroid gland using a percutaneous endoscopic 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 0GN04ZZ (pituitary gland), 0GN14ZZ (pineal body), 0GN24ZZ (left adrenal gland), 0GN34ZZ (right adrenal gland), 0GN44ZZ (bilateral adrenal glands), 0GN64ZZ (left carotid body) and 15 more.

The same procedure with a different approach is coded 0GNM0ZZ (open) and 0GNM3ZZ (percutaneous).

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
4Percutaneous Endoscopic

Entry, by puncture or minor incision, of instrumentation through the skin or mucous membrane and any other body layers necessary to reach and visualize 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 0GNM4ZZ

Is 0GNM4ZZ a valid ICD-10-PCS code for 2027?

Yes. 0GNM4ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 0GNM4ZZ an O.R. procedure?

Yes. 0GNM4ZZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 0GNM4ZZ group to?

Depending on the principal diagnosis, 0GNM4ZZ can group to MS-DRG 625, MS-DRG 626 and MS-DRG 627.

What is the ICD-9 procedure code for 0GNM4ZZ?

The CMS GEMs map 0GNM4ZZ to ICD-9-CM 06.99 (Other operations on parathyroid glands).