ICD-10-PCS 2027 procedure code
3E0Q029Introduction of Other Anti-infective into Cranial Cavity and Brain, Open Approach
Short description: Introduce Oth Anti-infect in Cran Cav/Brain, Open
Code last changed in FY2017 (effective October 1, 2016). Source: official FY2027 ICD-10-PCS release from CMS. Page updated September 29, 2026. About our data
About 3E0Q029
3E0Q029 is the ICD-10-PCS code for a introduction procedure on the cranial cavity and brain using an open approach with anti-infective (qualifier: other anti-infective). In ICD-10-PCS, introduction means putting in or on a therapeutic, diagnostic, nutritional, physiological, or prophylactic substance except blood or blood products.
In plain terms, this corresponds to injection of antibiotic, the ICD-9-CM procedure title it maps to (99.21).
For a different body part, codes include 3E03029 (peripheral vein), 3E04029 (central vein), 3E05029 (peripheral artery), 3E06029 (central artery) and 3E0U029 (joints).
The same procedure with a different approach is coded 3E0Q329 (percutaneous).
It doesn't appear in the MS-DRG procedure index, so on its own it doesn't change the DRG assignment.
It was added in FY2017, effective October 1, 2016.
What each character means
- 1. Section
- 3Administration
- 2. Body System
- EPhysiological Systems and Anatomical Regions
- 3. Operation
- 0Introduction
Putting in or on a therapeutic, diagnostic, nutritional, physiological, or prophylactic substance except blood or blood products
- 4. Body System / Region
- QCranial Cavity and Brain
- 5. Approach
- 0Open
Cutting through the skin or mucous membrane and any other body layers necessary to expose the site of the procedure
- 6. Substance
- 2Anti-infective
- 7. Qualifier
- 9Other Anti-infective
Other versions of this procedure
Different body system / region
Different approach
Different qualifier
ICD-9-CM equivalent
Converter →- 99.21Injection of antibioticapproximate
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
- FY2017 (effective 10/1/2016): Added
- No changes since FY2017.
Common questions about 3E0Q029
Is 3E0Q029 a valid ICD-10-PCS code for 2027?
- Yes. 3E0Q029 is valid for inpatient procedures from October 1, 2026 through September 30, 2027.
What is the ICD-9 procedure code for 3E0Q029?
- The CMS GEMs map 3E0Q029 to ICD-9-CM 99.21 (Injection of antibiotic).