Sickle-cell trait

This code identifies an individual who carries one copy of the sickle hemoglobin gene (HbS) and one copy of the normal hemoglobin gene (HbA). Individuals with sickle-cell trait are typically asymptomatic and do not experience the severe complications associated with sickle cell disease, but they can pass the trait to their offspring. It is a benign genetic condition that can be identified through hemoglobin electrophoresis or other genetic testing.

Use this code when documentation explicitly states "sickle-cell trait" or indicates a heterozygous state for the sickle cell gene. This is often identified during newborn screening, premarital screening, or family planning counseling. It is also appropriate when a patient presents with a positive screening test for sickle cell trait, even in the absence of symptoms.

• Do not confuse this code with codes for sickle cell anemia or other sickle cell disorders, which involve two copies of the HbS gene.
• This code is typically a secondary diagnosis unless the reason for the encounter is specifically related to screening or counseling for the trait.
• Ensure documentation clearly distinguishes between sickle-cell trait and sickle cell disease to avoid incorrect coding.