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ICD-10-CM 2027

ICD-10 code for Coronal craniosynostosis

Q75.029

Coronal craniosynostosis, unspecified

✓ Billable / specific

From the official ICD-10-CM alphabetic index entry “Craniosynostosis › coronal”. Page updated September 29, 2026.

About coding Coronal craniosynostosis

The ICD-10-CM code for Coronal craniosynostosis is Q75.029 (Coronal craniosynostosis, unspecified). The official index lists 2 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on Q75.029.

Within Q75.02, choose Q75.029 (unspecified) only when documentation doesn't support a more specific option: unilateral (Q75.021) and bilateral (Q75.022).

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.

More specific Coronal craniosynostosis codes (official index)

  • bilateral Q75.022 — Coronal craniosynostosis, bilateral
  • unilateral Q75.021 — Coronal craniosynostosis, unilateral

Common questions about Coronal craniosynostosis ICD-10 codes

What is the ICD-10 code for Coronal craniosynostosis?

Q75.029 — Coronal craniosynostosis, unspecified. More specific codes apply when the documentation supports them: Q75.022, Q75.021.

What is the ICD-10 code for bilateral coronal craniosynostosis?

Q75.022 — Coronal craniosynostosis, bilateral.

What is the ICD-10 code for unilateral coronal craniosynostosis?

Q75.021 — Coronal craniosynostosis, unilateral.

Is Q75.029 billable?

Yes. Q75.029 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can Q75.029 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict Q75.029 as a principal diagnosis.

Is Q75.029 a CC or MCC?

No. Q75.029 is neither a CC nor an MCC under MS-DRG v44.0.