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ICD-10-PCS 2027 procedure code

008F0ZZDivision of Olfactory Nerve, 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 008F0ZZ

008F0ZZ is the ICD-10-PCS code for a division procedure on the olfactory nerve using an open approach. In ICD-10-PCS, division means cutting into a body part, without draining fluids and/or gases from the body part, in order to separate or transect a body part.

In plain terms, this corresponds to division or crushing of other cranial and peripheral nerves, the ICD-9-CM procedure title it maps to (04.03).

For a different body part, codes include 00800ZZ (brain), 00870ZZ (cerebral hemisphere), 00880ZZ (basal ganglia), 008G0ZZ (optic nerve), 008H0ZZ (oculomotor nerve), 008J0ZZ (trochlear nerve) and 11 more.

The same procedure with a different approach is coded 008F3ZZ (percutaneous) and 008F4ZZ (percutaneous endoscopic).

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 Musculoskeletal System and Connective Tissue O.R. Procedures” and 2 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
0Central Nervous System and Cranial Nerves
3. Operation
8Division

Cutting into a body part, without draining fluids and/or gases from the body part, in order to separate or transect a body part

All or a portion of the body part is separated into two or more portions

Includes: Spinal cordotomy, osteotomy

4. Body Part
FOlfactory Nerve

Includes: First cranial nerve; Olfactory bulb

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 →
  • 04.03Division or crushing of other cranial and peripheral nervesapproximate

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 008F0ZZ

Is 008F0ZZ a valid ICD-10-PCS code for 2027?

Yes. 008F0ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 008F0ZZ an O.R. procedure?

Yes. 008F0ZZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 008F0ZZ group to?

Depending on the principal diagnosis, 008F0ZZ 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 008F0ZZ?

The CMS GEMs map 008F0ZZ to ICD-9-CM 04.03 (Division or crushing of other cranial and peripheral nerves).