ICD-10-PCS 2027 procedure code
0LNN4ZZRelease Right Lower Leg Tendon, Percutaneous Endoscopic Approach
Short description: Release Right Lower Leg Tendon, Perc Endo Approach
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 0LNN4ZZ
0LNN4ZZ is the ICD-10-PCS code for a release procedure on the right lower leg tendon using a percutaneous endoscopic approach. In ICD-10-PCS, release means freeing a body part from an abnormal physical constraint by cutting or by the use of force.
In plain terms, this corresponds to lysis of adhesions of muscle, tendon, fascia, and bursa, the ICD-9-CM procedure title it maps to (83.91).
For a different body part, codes include 0LN04ZZ (head and neck tendon), 0LN14ZZ (right shoulder tendon), 0LN24ZZ (left shoulder tendon), 0LN34ZZ (right upper arm tendon), 0LN44ZZ (left upper arm tendon), 0LN54ZZ (right lower arm and wrist tendon) and 21 more.
The same procedure with a different approach is coded 0LNN0ZZ (open), 0LNN3ZZ (percutaneous) and 0LNNXZZ (external).
It is an operating-room procedure in the MS-DRG logic for DRG 500 (Soft Tissue Procedures with MCC), DRG 501 (Soft Tissue Procedures with CC) and DRG 502 (Soft Tissue Procedures without CC/MCC), under the surgical category “Soft Tissue 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
- LTendons
- 3. Operation
- NRelease
Freeing a body part from an abnormal physical constraint by cutting or by the use of force
Some of the restraining tissue may be taken out but none of the body part is taken out
Includes: Adhesiolysis, carpal tunnel release
- 4. Body Part
- NLower Leg Tendon, Right
- 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
- ZNo Device
- 7. Qualifier
- ZNo Qualifier
Other versions of this procedure
Different body part
- 0LN04ZZHead and Neck Tendon
- 0LN14ZZShoulder Tendon, Right
- 0LN24ZZShoulder Tendon, Left
- 0LN34ZZUpper Arm Tendon, Right
- 0LN44ZZUpper Arm Tendon, Left
- 0LN54ZZLower Arm and Wrist Tendon, Right
- 0LN64ZZLower Arm and Wrist Tendon, Left
- 0LN74ZZHand Tendon, Right
- 0LN84ZZHand Tendon, Left
- 0LN94ZZTrunk Tendon, Right
- 0LNB4ZZTrunk Tendon, Left
- 0LNC4ZZThorax Tendon, Right
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 08 · Diseases and Disorders of the Musculoskeletal System and Connective Tissue · Soft Tissue Procedures
ICD-9-CM equivalent
Converter →- 83.91Lysis of adhesions of muscle, tendon, fascia, and bursaapproximate
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 0LNN4ZZ
Is 0LNN4ZZ a valid ICD-10-PCS code for 2027?
- Yes. 0LNN4ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.
Is 0LNN4ZZ an O.R. procedure?
- Yes. 0LNN4ZZ is an O.R. procedure in MS-DRG v44.0.
What DRG does 0LNN4ZZ group to?
- Depending on the principal diagnosis, 0LNN4ZZ can group to MS-DRG 500, MS-DRG 501 and MS-DRG 502.
What is the ICD-9 procedure code for 0LNN4ZZ?
- The CMS GEMs map 0LNN4ZZ to ICD-9-CM 83.91 (Lysis of adhesions of muscle, tendon, fascia, and bursa).