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ICD-10-CM 2027

ICD-10 code for Union anomaly

Choose a code from the options below based on the documentation.

From the official ICD-10-CM alphabetic index entry “Anomaly, anomalous (congenital) (unspecified type) › union”. Page updated September 29, 2026.

About coding Union anomaly

The official ICD-10-CM index doesn't give a single default code for union anomaly; the code depends on the details below.

More specific Union anomaly codes (official index)

  • cricoid cartilage and thyroid cartilage Q31.8 — Other congenital malformations of larynx
  • thyroid cartilage and hyoid bone Q31.8 — Other congenital malformations of larynx
  • trachea with larynx Q31.8 — Other congenital malformations of larynx

Common questions about Union anomaly ICD-10 codes

What is the ICD-10 code for trachea with larynx union anomaly?

Q31.8 — Other congenital malformations of larynx.