E34.52 Partial androgen insensitivity syndrome

Name of the Condition

• Partial Androgen Insensitivity Syndrome (ICD-10 Code: E34.52)

Summary

Partial androgen insensitivity syndrome (PAIS) is a genetic condition where individuals with XY chromosomes have a reduced response to male hormones (androgens), leading to incomplete development of male characteristics. This results in varying degrees of undermasculinization, depending on the extent of androgen receptor dysfunction. The condition affects sexual development and may present with ambiguous genitalia, primary amenorrhea, or infertility, requiring clinical and genetic evaluation for diagnosis.

Causes

PAIS is caused by mutations in the androgen receptor gene, which disrupts the body’s ability to respond to androgens. These mutations can be inherited or occur spontaneously. The severity of the condition depends on the type of mutation and its impact on receptor function, leading to partial insensitivity to androgens.

Risk Factors

• Genetic mutations in the androgen receptor gene.
• Family history of androgen insensitivity syndrome or related disorders.
• Sporadic mutations in individuals with no family history.

Symptoms

• Ambiguous genitalia at birth.
• Primary amenorrhea (absence of menstruation) in adolescents.
• Infertility or reduced fertility.
• Sparse body hair.
• Variable breast development.

Diagnosis

Diagnosis involves clinical evaluation of physical characteristics, hormone level testing (e.g., testosterone, luteinizing hormone), and genetic testing to identify androgen receptor gene mutations. Imaging studies may assess internal reproductive structures, and karyotyping confirms XY chromosome status.

Treatment Options

Treatment is individualized and may include hormone therapy (e.g., testosterone or anti-androgens), surgical interventions for ambiguous genitalia or gonadal management, and psychological support. Fertility options, such as assisted reproductive technologies, may be considered based on clinical findings.

Prognosis and Follow-Up

Prognosis depends on the degree of androgen insensitivity and associated complications. Regular follow-up with endocrinologists, gynecologists, and genetic counselors is recommended to monitor hormone levels, reproductive health, and psychosocial well-being. Lifelong management may be necessary.

Complications

• Infertility or reduced fertility.
• Increased risk of gonadal tumors (e.g., gonadoblastoma) if gonads are retained.
• Psychological distress related to gender identity or body image.
• Metabolic issues (e.g., insulin resistance) in some cases.

Lifestyle & Prevention

• Genetic counseling for affected individuals and families.
• Regular medical monitoring to address potential complications.
• Supportive care for psychosocial and gender-related concerns.

When to Seek Professional Help

Seek medical attention if there are concerns about ambiguous genitalia, delayed puberty, primary amenorrhea, or infertility. Early evaluation is important for diagnosis and management.

Tips for Medical Coders

Document the degree of androgen insensitivity (partial vs. complete) and any associated symptoms or complications to support accurate coding. Ensure clinical documentation aligns with the specific ICD-10-CM code E34.52 for partial androgen insensitivity syndrome.