Congenital hypothyroidism

This code represents a condition present at birth where the thyroid gland is underactive or absent, leading to insufficient production of thyroid hormones. This deficiency can impair physical and neurological development if not promptly treated.

Use this code for newborns or infants diagnosed with an underactive thyroid gland identified through newborn screening or clinical symptoms. Documentation should clearly state a congenital origin, often supported by laboratory findings of elevated TSH and low T4.

• Ensure documentation specifies "congenital" to differentiate from acquired hypothyroidism.
• Do not use for transient neonatal hypothyroidism unless it is confirmed to be a permanent congenital form.
• Consider additional codes for any associated developmental delays or intellectual disabilities, if documented.