Hypoplasia of penis

This code represents an underdeveloped or abnormally small penis, a congenital anomaly often associated with hormonal imbalances or genetic conditions. It signifies a penis that is disproportionately small relative to the individual's age and stage of development, impacting both cosmetic and functional aspects.

Use this code when documentation explicitly states "hypoplasia of penis" or describes a congenitally small or underdeveloped penis. This diagnosis is typically made during infancy or childhood, often in the context of a physical examination or workup for ambiguous genitalia or endocrine disorders. Supporting documentation should include physician notes detailing the penile dimensions and any associated clinical findings.

• Differentiate from micropenis, which is a specific measurement-based diagnosis, though often used interchangeably in clinical practice.
• Always look for underlying causes, such as hypogonadism (E29.1) or other endocrine disorders, and code them as secondary diagnoses when documented.
• Ensure the documentation clearly states a congenital origin; otherwise, consider other codes for acquired penile atrophy if applicable.