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ICD-10-CM 2027

ICD-10 code for Sternomastoid congenital tumor

Q68.0

Congenital deformity of sternocleidomastoid muscle

✓ Billable / specific

From the official ICD-10-CM alphabetic index entry “Tumor › sternomastoid (congenital)”. Page updated September 29, 2026.

About coding Sternomastoid congenital tumor

The ICD-10-CM code for Sternomastoid congenital tumor is Q68.0 (Congenital deformity of sternocleidomastoid muscle).

Within Q68 (other congenital musculoskeletal deformities), Q68.0 is specifically for congenital deformity of sternocleidomastoid muscle. Related codes cover congenital deformity of finger(s) and hand (Q68.1), congenital deformity of knee (Q68.2), congenital bowing of femur (Q68.3), congenital bowing of tibia and fibula (Q68.4), congenital bowing of long bones of leg, unspecified (Q68.5), Discoid meniscus (Q68.6) and other specified congenital musculoskeletal deformities (Q68.8).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 564 (Other Musculoskeletal System and Connective Tissue Diagnoses with MCC, relative weight 1.4908), DRG 565 (Other Musculoskeletal System and Connective Tissue Diagnoses with CC, relative weight 0.9783) and DRG 566 (Other Musculoskeletal System and Connective Tissue Diagnoses without CC/MCC, relative weight 0.7378), in MDC 08 (Diseases and Disorders of the Musculoskeletal System and Connective Tissue), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

Common questions about Sternomastoid congenital tumor ICD-10 codes

What is the ICD-10 code for Sternomastoid congenital tumor?

Q68.0 — Congenital deformity of sternocleidomastoid muscle.

Is Q68.0 billable?

Yes. Q68.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can Q68.0 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict Q68.0 as a principal diagnosis.

Is Q68.0 a CC or MCC?

No. Q68.0 is neither a CC nor an MCC under MS-DRG v44.0.