ICD-10-PCS 2027 procedure code
0C9S7ZXDrainage of Larynx, Via Natural or Artificial Opening, Diagnostic
Short description: Drainage of Larynx, Via Natural or Artificial Opening, Diagn
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 0C9S7ZX
0C9S7ZX is the ICD-10-PCS code for a drainage procedure on the larynx using a via natural or artificial opening approach (qualifier: diagnostic). In ICD-10-PCS, drainage means taking or letting out fluids and/or gases from a body part.
In plain terms, this corresponds to closed [endoscopic] biopsy of larynx, the ICD-9-CM procedure title it maps to (31.43).
For a different body part, codes include 0C9M7ZX (pharynx), 0C9R7ZX (epiglottis), 0C9T7ZX (right vocal cord) and 0C9V7ZX (left vocal cord).
The same procedure with a different approach is coded 0C9S0ZX (open), 0C9S3ZX (percutaneous), 0C9S4ZX (percutaneous endoscopic) and 0C9S8ZX (via natural or artificial opening endoscopic).
It doesn't appear in the MS-DRG procedure index, so on its own it doesn't change the DRG assignment.
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
- CMouth and Throat
- 3. Operation
- 9Drainage
Taking or letting out fluids and/or gases from a body part
The qualifier DIAGNOSTIC is used to identify drainage procedures that are biopsies
Includes: Thoracentesis, incision and drainage
- 4. Body Part
- SLarynx
Includes: Aryepiglottic fold; Arytenoid cartilage; Corniculate cartilage; Cricoid cartilage; Cricothyroid membrane; Cuneiform cartilage; False vocal cord; Glottis; Rima glottidis; Thyroid cartilage; Ventricular fold
- 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
- ZNo Device
- 7. Qualifier
- XDiagnostic
Other versions of this procedure
Different approach
Different qualifier
ICD-9-CM equivalent
Converter →- 31.43Closed [endoscopic] biopsy of larynxapproximate
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about 0C9S7ZX
Is 0C9S7ZX a valid ICD-10-PCS code for 2027?
- Yes. 0C9S7ZX is valid for inpatient procedures from October 1, 2026 through September 30, 2027.
What is the ICD-9 procedure code for 0C9S7ZX?
- The CMS GEMs map 0C9S7ZX to ICD-9-CM 31.43 (Closed [endoscopic] biopsy of larynx).