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ICD-10-PCS 2027 procedure code

021K4APBypass Right Ventricle to Pulmonary Trunk with Autologous Arterial Tissue, Percutaneous Endoscopic Approach

✓ Valid for 2027O.R. procedure

Short description: Bypass R Ventricle to Pulm Trunk w Autol Art, Perc Endo

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 021K4AP

021K4AP is the ICD-10-PCS code for a bypass procedure on the right ventricle using a percutaneous endoscopic approach with autologous arterial tissue (qualifier: pulmonary trunk). In ICD-10-PCS, bypass means altering the route of passage of the contents of a tubular body part.

In plain terms, this corresponds to creation of conduit between right ventricle and pulmonary artery, the ICD-9-CM procedure title it maps to (35.92).

For a different body part, codes include 02164AP (right atrium), 02174AP (left atrium), 021L4AP (left ventricle), 021V4AP (superior vena cava), 021W4AP (thoracic aorta, descending) and 021X4AP (thoracic aorta, ascending/arch).

The same procedure with a different approach is coded 021K0AP (open).

With a different device, use 021K48P (zooplastic tissue), 021K49P (autologous venous tissue), 021K4JP (synthetic substitute), 021K4KP (nonautologous tissue substitute) and 021K4ZP (no device).

It is an operating-room procedure in the MS-DRG logic for DRG 228 (Other Cardiothoracic Procedures with MCC) and DRG 229 (Other Cardiothoracic Procedures without MCC), under the surgical category “Other Cardiothoracic 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
2Heart and Great Vessels
3. Operation
1Bypass

Altering the route of passage of the contents of a tubular body part

Rerouting contents of a body part to a downstream area of the normal route, to a similar route and body part, or to an abnormal route and dissimilar body part. Includes one or more anastomoses, with or without the use of a device

Includes: Coronary artery bypass, colostomy formation

4. Body Part
KVentricle, Right

Includes: Conus arteriosus

5. Approach
4Percutaneous Endoscopic

Entry, by puncture or minor incision, of instrumentation through the skin or mucous membrane and any other body layers necessary to reach and visualize the site of the procedure

6. Device
AAutologous Arterial Tissue
7. Qualifier
PPulmonary Trunk

Other versions of this procedure

Different approach

MS-DRG v44.0 grouping

All DRGs →

Surgical MS-DRGs this procedure can group to, depending on the principal diagnosis's MDC.

MDC 05 · Diseases and Disorders of the Circulatory System · Other Cardiothoracic Procedures

ICD-9-CM equivalent

Converter →
  • 35.92Creation of conduit between right ventricle and pulmonary arteryapproximate

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 021K4AP

Is 021K4AP a valid ICD-10-PCS code for 2027?

Yes. 021K4AP is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 021K4AP an O.R. procedure?

Yes. 021K4AP is an O.R. procedure in MS-DRG v44.0.

What DRG does 021K4AP group to?

Depending on the principal diagnosis, 021K4AP can group to MS-DRG 228 and MS-DRG 229.

What is the ICD-9 procedure code for 021K4AP?

The CMS GEMs map 021K4AP to ICD-9-CM 35.92 (Creation of conduit between right ventricle and pulmonary artery).