D80.7

HCC Category Mapping

What This Code Means

A temporary condition in infants where antibody production is low but typically resolves on its own as the immune system matures.

Coding Tips

• •Confirm patient age is in infancy period; this condition is self-limiting and should resolve by age 3-6 months
• •Document that this is transient and not a permanent immunodeficiency disorder

Clinical Significance

Transient hypogammaglobulinemia of infancy is a temporary physiologic immunodeficiency occurring when maternal immunoglobulin G antibodies decline faster than the infant's own immune system can produce replacement antibodies. This self-limiting condition typically resolves by 2 to 4 years of age as the infant's immune system matures, though some children may experience increased susceptibility to infections during this period.

Documentation Requirements

• ✓Documentation must confirm the patient is an infant or young child, include quantitative immunoglobulin levels showing low Immunoglobulin G for age, evidence that the condition is expected to resolve (not a permanent primary immunodeficiency), and any clinical infections requiring treatment.
• ✓Document serial immunoglobulin levels showing improvement over time and confirm resolution or continued monitoring.

Commonly Confused Codes