ICD-11 classes
19 Certain conditions originating in the perinatal period
Birth injury
KA43 — Birth injury to skin or soft tissues
KA43.0 — Birth injury to sternocleidomastoid

ICD-11 KA43.0 — Birth injury to sternocleidomastoid

Injury to the sternomastoid muscle due to birth usually presents with torticollis (tilt and rotation of head) and a firm, spindle-shaped, immobile mass in the midportion of sternomastoid muscle.

The diagnosis includes nothing.

The diagnosis excludes nothing.

It has no clarifying diagnoses.