Congenital hypotonia

This code signifies a congenital condition characterized by abnormally low muscle tone or "floppiness" present at birth. It reflects a generalized decrease in muscle resistance to passive movement, often impacting an infant's posture and motor development.

Apply this code when documentation clearly indicates hypotonia identified at or shortly after birth, suggesting a congenital origin. Supporting documentation should include physician notes detailing the infant's muscle tone assessment and the timing of onset.

• Differentiate from acquired hypotonia; this code is strictly for congenital presentations.
• Always seek to code the underlying cause of the congenital hypotonia if identified and documented (e.g., genetic syndromes, metabolic disorders).
• Do not use for transient hypotonia without a confirmed congenital etiology.