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ICD-10-PCS 2027 procedure code

00RM0KZReplacement of Facial Nerve with Nonautologous Tissue Substitute, Open Approach

✓ Valid for 2027O.R. procedure

Short description: Replacement of Facial Nerve with Nonaut Sub, Open Approach

Code last changed in FY2018 (effective October 1, 2017). Source: official FY2027 ICD-10-PCS release from CMS. Page updated September 29, 2026. About our data

About 00RM0KZ

00RM0KZ is the ICD-10-PCS code for a replacement procedure on the facial nerve using an open approach with nonautologous tissue substitute. In ICD-10-PCS, replacement means putting in or on biological or synthetic material that physically takes the place and/or function of all or a portion of a body part.

In plain terms, this corresponds to cranial or peripheral nerve graft, the ICD-9-CM procedure title it maps to (04.5).

For a different body part, codes include 00R10KZ (cerebral meninges), 00R20KZ (dura mater), 00R60KZ (cerebral ventricle), 00RF0KZ (olfactory nerve), 00RG0KZ (optic nerve), 00RH0KZ (oculomotor nerve) and 9 more.

The same procedure with a different approach is coded 00RM4KZ (percutaneous endoscopic).

With a different device, use 00RM07Z (autologous tissue substitute) and 00RM0JZ (synthetic substitute).

It is an operating-room procedure in the MS-DRG logic for DRG 040 (Peripheral, Cranial Nerve and Other Nervous System Procedures with MCC), DRG 041 (Peripheral, Cranial Nerve and Other Nervous System Procedures with CC or Peripheral Neurostimulator), DRG 042 (Peripheral, Cranial Nerve and Other Nervous System Procedures without CC/MCC), DRG 143 (Other Ear, Nose, Mouth and Throat O.R. Procedures with MCC), DRG 144 (Other Ear, Nose, Mouth and Throat O.R. Procedures with CC) and DRG 145 (Other Ear, Nose, Mouth and Throat O.R. Procedures without CC/MCC), under the surgical categories “Peripheral, Cranial Nerve and Other Nervous System Procedures”, “Other Ear, Nose, Mouth and Throat O.R. Procedures”, “Other O.R. Procedures for Injuries” and 1 more.

It was added in FY2018, effective October 1, 2017.

What each character means

1. Section
0Medical and Surgical
2. Body System
0Central Nervous System and Cranial Nerves
3. Operation
RReplacement

Putting in or on biological or synthetic material that physically takes the place and/or function of all or a portion of a body part

The body part may have been taken out or replaced, or may be taken out, physically eradicated, or rendered nonfunctional during the Replacement procedure. A Removal procedure is coded for taking out the device used in a previous replacement procedure

Includes: Total hip replacement, bone graft, free skin graft

4. Body Part
MFacial Nerve

Includes: Chorda tympani; Geniculate ganglion; Greater superficial petrosal nerve; Nerve to the stapedius; Parotid plexus; Posterior auricular nerve; Seventh cranial nerve; Submandibular ganglion

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
KNonautologous Tissue Substitute

Includes: Acellular Hydrated Dermis; Bone bank bone graft; Cook Biodesign(R) Fistula Plug(s); Cook Biodesign(R) Hernia Graft(s); Cook Biodesign(R) Layered Graft(s); Cook Zenapro(tm) Layered Graft(s); Fish skin; Kerecis(R) (GraftGuide) (MariGen) (SurgiBind) (SurgiClose); MIRODERM(tm) Biologic Wound Matrix; Piscine skin; Tissue bank graft

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 →
  • 04.5Cranial or peripheral nerve graftapproximate

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
  • FY2018 (effective 10/1/2017): Added
  • No changes since FY2018.

Common questions about 00RM0KZ

Is 00RM0KZ a valid ICD-10-PCS code for 2027?

Yes. 00RM0KZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 00RM0KZ an O.R. procedure?

Yes. 00RM0KZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 00RM0KZ group to?

Depending on the principal diagnosis, 00RM0KZ can group to MS-DRG 040, MS-DRG 041, MS-DRG 042, MS-DRG 143, MS-DRG 144 and MS-DRG 145.

What is the ICD-9 procedure code for 00RM0KZ?

The CMS GEMs map 00RM0KZ to ICD-9-CM 04.5 (Cranial or peripheral nerve graft).