ICD-10-CM 2027 diagnosis code
S46.1Injury of muscle, fascia and tendon of long head of biceps
S46.1 is a header code, so it can't be reported by itself. Choose one of the 4 more specific codes beneath it and add the required 7th character.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About S46.1
S46.1 is the ICD-10-CM diagnosis code for injury of muscle, fascia and tendon of long head of biceps. It belongs to category S46 (injury of muscle, fascia and tendon at shoulder and upper arm level), block S40-S49 (injuries to the shoulder and upper arm) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is a header code, so it can't be reported by itself; one of its 4 subcodes must be used instead.
Within S46 (injury of muscle, fascia and tendon at shoulder and upper arm level), S46.1 is specifically for injury of muscle, fascia and tendon of long head of biceps. Related codes cover muscle(s) and tendon(s) of the rotator cuff of shoulder (S46.0), muscle, fascia and tendon of other parts of biceps (S46.2), muscle, fascia and tendon of triceps (S46.3), other muscles, fascia and tendons at shoulder and upper arm level (S46.8) and unspecified muscle, fascia and tendon at shoulder and upper arm level (S46.9).
Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
7th character
The appropriate 7th character is to be added to each code from category S46
- S46.10Unspecified injury of muscle, fascia and tendon of long head of biceps
- S46.11Strain of muscle, fascia and tendon of long head of biceps
- S46.12Laceration of muscle, fascia and tendon of long head of biceps
- S46.19Other injury of muscle, fascia and tendon of long head of biceps
- Ainitial encounter
- Dsubsequent encounter
- Ssequela
Notes that apply from higher levels
Instructions written at a parent level also apply to S46.1.
Broader instructions also apply from S40-S49 Injuries to the shoulder and upper arm 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)
- No changes since FY2016.
Common questions about S46.1
Is S46.1 billable?
- No. S46.1 is a header code. Report one of its more specific subcodes instead.