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ICD-10-CM 2027

ICD-10 code for sternum dislocation

S23.29

Dislocation of other parts of thorax

Header — needs a more specific code

From the official ICD-10-CM alphabetic index entry “Dislocation (articular) › sternum”. Page updated September 29, 2026.

About coding sternum dislocation

The ICD-10-CM code for sternum dislocation is S23.29 (Dislocation of other parts of thorax).

Within S23.2, choose S23.29 (other parts of thorax) only when documentation doesn't support a more specific option: unspecified part of thorax (S23.20).

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.

Common questions about sternum dislocation ICD-10 codes

What is the ICD-10 code for sternum dislocation?

S23.29 — Dislocation of other parts of thorax (a header code; report a more specific subcode).

Is S23.29 billable?

No. S23.29 is a header code. Report one of its more specific subcodes instead.