Indeterminate sex, unspecified

This diagnosis code signifies a situation where the biological sex of an individual cannot be definitively determined at birth or during subsequent evaluation. It indicates an ambiguous presentation of external or internal genitalia, making it impossible to assign male or female sex. This condition often points to underlying disorders of sex development (DSD).

This code is appropriate when medical documentation explicitly states "indeterminate sex" or "ambiguous genitalia" without further specification of the underlying cause or specific anatomical findings. It is used when a definitive diagnosis of a specific DSD (e.g., congenital adrenal hyperplasia, androgen insensitivity syndrome) has not yet been established. Documentation should clearly reflect the inability to assign a sex.

• Do not use this code if a more specific diagnosis of a disorder of sex development (DSD) is documented.
• Always review the medical record for any further details regarding the anatomical findings or genetic testing results that might lead to a more precise DSD code.
• This code should be considered a temporary diagnosis until a definitive cause for the ambiguous genitalia can be determined.