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ICD-10-PCS 2027 procedure code

09UN77ZSupplement Nasopharynx with Autologous Tissue Substitute, Via Natural or Artificial Opening

✓ Valid for 2027O.R. procedure

Short description: Supplement Nasopharynx with Autol Sub, Via Opening

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 09UN77Z

09UN77Z is the ICD-10-PCS code for a supplement procedure on the nasopharynx using a via natural or artificial opening approach with autologous tissue substitute. In ICD-10-PCS, supplement means putting in or on biological or synthetic material that physically reinforces and/or augments the function of a portion of a body part.

In plain terms, this corresponds to plastic operation on pharynx, the ICD-9-CM procedure title it maps to (29.4).

For a different body part, codes include 09U777Z (right tympanic membrane), 09U877Z (left tympanic membrane), 09UB77Z (right mastoid sinus), 09UC77Z (left mastoid sinus), 09UL77Z (nasal turbinate), 09UP77Z (accessory sinus) and 8 more.

The same procedure with a different approach is coded 09UN07Z (open) and 09UN87Z (via natural or artificial opening endoscopic).

With a different device, use 09UN7JZ (synthetic substitute) and 09UN7KZ (nonautologous tissue 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 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
9Ear, Nose, Sinus
3. Operation
USupplement

Putting in or on biological or synthetic material that physically reinforces and/or augments the function of a portion of a body part

The biological material is non-living, or is living and from the same individual. The body part may have been previously replaced, and the Supplement procedure is performed to physically reinforce and/or augment the function of the replaced body part

Includes: Herniorrhaphy using mesh, mitral valve ring annuloplasty, put a new acetabular liner in a previous hip replacement

4. Body Part
NNasopharynx

Includes: Choana; Fossa of Rosenmuller; Pharyngeal recess; Rhinopharynx

5. Approach
7Via Natural or Artificial Opening

Entry of instrumentation through a natural or artificial external opening to reach the site of the procedure

6. Device
7Autologous Tissue Substitute

Includes: Autograft; Cultured epidermal cell autograft; Epicel(R) cultured epidermal autograft

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 →
  • 29.4Plastic operation on pharynxapproximate

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 09UN77Z

Is 09UN77Z a valid ICD-10-PCS code for 2027?

Yes. 09UN77Z is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 09UN77Z an O.R. procedure?

Yes. 09UN77Z is an O.R. procedure in MS-DRG v44.0.

What DRG does 09UN77Z group to?

Depending on the principal diagnosis, 09UN77Z 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 09UN77Z?

The CMS GEMs map 09UN77Z to ICD-9-CM 29.4 (Plastic operation on pharynx).