ICD-10-CM 2027 diagnosis code
S23.420Sprain of sternoclavicular (joint) (ligament)
S23.420 was removed from ICD-10-CM in FY2027 and can't be reported for dates of service on or after October 1, 2026. See the more specific codes below.
Code last changed in FY2016 (effective October 1, 2015). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About S23.420
S23.420 was the ICD-10-CM code for sprain of sternoclavicular (joint) (ligament) until it was deleted in FY2027. It can't be reported for dates of service on or after October 1, 2026.
7th character
The appropriate 7th character is to be added to each code from category S23
Notes that apply from higher levels
Instructions written at a parent level also apply to S23.420.
› From S23 Dislocation and sprain of joints and ligaments of thorax
- avulsion of joint or ligament of thorax
- laceration of cartilage, joint or ligament of thorax
- sprain of cartilage, joint or ligament of thorax
- traumatic hemarthrosis of joint or ligament of thorax
- traumatic rupture of joint or ligament of thorax
- traumatic subluxation of joint or ligament of thorax
- traumatic tear of joint or ligament of thorax
- any associated open wound
Broader instructions also apply from S20-S29 Injuries to the thorax and Chapter 19: Injury, poisoning and certain other consequences of external causes.
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)
- FY2027 (effective 10/1/2026): Deleted
Common questions about S23.420
Is S23.420 billable?
- No. S23.420 was deleted in FY2027.
Did S23.420 change for 2027?
- Yes. For FY2027 (effective October 1, 2026) it was deleted.