ICD-10 Code for Shoulder Impingement

Also searched as shoulder impingement syndrome

The ICD-10-CM code for shoulder impingement depends on the side: M75.41 for the right side, M75.42 for the left and M75.40 when the side is not documented. M75.4 itself is a header code and cannot be billed. There is no bilateral code, so bilateral shoulder impingement is reported with the right and left codes together. Valid for FY2027.

M75.4- is a header — not billableLaterality required

Shoulder impingement ICD-10 codes at a glance

Condition	Shoulder impingement
Right	M75.41 — Impingement syndrome of right shoulder
Left	M75.42 — Impingement syndrome of left shoulder
Unspecified	M75.40 — Impingement syndrome of unspecified shoulder
Billable	No — M75.4 is a header; use a code beneath it
Alphabetic Index entry	Syndrome, impingement, shoulder
Code set	ICD-10-CM FY2027, valid October 1, 2026 – September 30, 2027

What is the ICD-10 code for right shoulder impingement?

The ICD-10-CM code for right shoulder impingement is M75.41 — Impingement syndrome of right shoulder. M75.41 is billable.

What is the ICD-10 code for left shoulder impingement?

The ICD-10-CM code for left shoulder impingement is M75.42 — Impingement syndrome of left shoulder. M75.42 is billable.

Is there an ICD-10 code for bilateral shoulder impingement?

No. ICD-10-CM has no bilateral code for shoulder impingement, so bilateral shoulder impingement is reported with both M75.41 (right) and M75.42 (left).

“If no bilateral code is provided and the condition is bilateral, assign separate codes for both the left and right side.”
ICD-10-CM Official Guidelines, Section I.B.13

When can the unspecified-side code for shoulder impingement be used?

The unspecified-side code for shoulder impingement is M75.40 — Impingement syndrome of unspecified shoulder. M75.40 is billable.

“If the side is not identified in the medical record, assign the code for the unspecified side.”
ICD-10-CM Official Guidelines, Section I.B.13

“Codes for "unspecified" side should rarely be used, such as when the documentation in the record is insufficient to determine the affected side and it is not possible to obtain clarification.”
ICD-10-CM Official Guidelines, Section I.B.13

What does the Tabular List say about M75.4?

The instructional notes that govern M75.4-, including those it inherits from its category and chapter. An Excludes1 note means the two codes are never reported together.

Excludes2 — not included here — inherited from Chapter 13

The conditions below are not part of M75.4, but a patient may have both at the same time. When documentation supports it, M75.4 and the excluded code may both be reported.

arthropathic psoriasis (L40.5-)
certain conditions originating in the perinatal period (P04-P96)
certain infectious and parasitic diseases (A00-B99)
compartment syndrome (traumatic) (T79.A-)
complications of pregnancy, childbirth and the puerperium (O00-O9A)
congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
endocrine, nutritional and metabolic diseases (E00-E88)
injury, poisoning and certain other consequences of external causes (S00-T88)
neoplasms (C00-D49)
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Excludes2 — not included here — inherited from M75