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ICD-10-PCS 2027 procedure code

0K840ZZDivision of Tongue, Palate, Pharynx Muscle, 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 0K840ZZ

0K840ZZ is the ICD-10-PCS code for a division procedure on the tongue, palate, pharynx muscle 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 Cricopharyngeal myotomy, the ICD-9-CM procedure title it maps to (29.31).

For a different body part, codes include 0K800ZZ (head muscle), 0K810ZZ (facial muscle), 0K820ZZ (right neck muscle), 0K830ZZ (left neck muscle), 0K850ZZ (right shoulder muscle), 0K860ZZ (left shoulder muscle) and 21 more.

The same procedure with a different approach is coded 0K843ZZ (percutaneous), 0K844ZZ (percutaneous endoscopic), 0K847ZZ (via natural or artificial opening) and 0K848ZZ (via natural or artificial opening endoscopic).

It is an operating-room procedure in the MS-DRG logic for 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), DRG 145 (Other Ear, Nose, Mouth and Throat O.R. Procedures without CC/MCC), DRG 326 (Stomach, Esophageal and Duodenal Procedures with MCC), DRG 327 (Stomach, Esophageal and Duodenal Procedures with CC) and DRG 328 (Stomach, Esophageal and Duodenal Procedures without CC/MCC), under the surgical categories “Other Ear, Nose, Mouth and Throat O.R. Procedures” and “Stomach, Esophageal and Duodenal 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
KMuscles
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
4Tongue, Palate, Pharynx Muscle

Includes: Chondroglossus muscle; Genioglossus muscle; Hyoglossus muscle; Inferior longitudinal muscle; Levator veli palatini muscle; Palatoglossal muscle; Palatopharyngeal muscle; Pharyngeal constrictor muscle; Salpingopharyngeus muscle; Styloglossus muscle; Stylopharyngeus muscle; Superior longitudinal muscle; Tensor veli palatini muscle

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 →
  • 29.31Cricopharyngeal myotomyapproximate

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 0K840ZZ

Is 0K840ZZ a valid ICD-10-PCS code for 2027?

Yes. 0K840ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 0K840ZZ an O.R. procedure?

Yes. 0K840ZZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 0K840ZZ group to?

Depending on the principal diagnosis, 0K840ZZ can group to MS-DRG 143, MS-DRG 144, MS-DRG 145, MS-DRG 326, MS-DRG 327 and MS-DRG 328.

What is the ICD-9 procedure code for 0K840ZZ?

The CMS GEMs map 0K840ZZ to ICD-9-CM 29.31 (Cricopharyngeal myotomy).