M75.42 — Impingement syndrome of left shoulder
M75.42

What this code means
Impingement syndrome of the left shoulder: pinching of the rotator cuff tendons causing pain on lifting the arm.
Also called: left shoulder impingement.
When this code is used
Used for impingement syndrome of left shoulder.
Where it sits in ICD-10-CM
Code M75.42 belongs to Chapter 13: Diseases of the musculoskeletal system and connective tissue, which covers codes M00–M99 in the FY2027 ICD-10-CM tabular list. The official description above is copied verbatim from the CDC/NCHS FY2027 code file.
Related symptoms
Related anatomy
Frequently asked questions
What is ICD-10-CM code M75.42?
M75.42 is the ICD-10-CM diagnosis code for “Impingement syndrome of left shoulder”. Impingement syndrome of the left shoulder: pinching of the rotator cuff tendons causing pain on lifting the arm.
When is code M75.42 used?
Used for impingement syndrome of left shoulder. It belongs to Chapter 13 of ICD-10-CM (Diseases of the musculoskeletal system and connective tissue).
This guide explains ICD-10-CM codes in plain language for patients, students and other readers. It is educational information only — not coding, billing or medical advice. The code recorded for any real encounter is assigned from the full clinical documentation by the treating team and qualified coders, and only they can decide which code fits a specific case.