ICD10 code of Biotinidase Deficiency and ICD9 code

Biotinidase deficiency is coded as E88.4 in the ICD-10-CM classification system, which refers to disorders of biotin metabolism. Under the older ICD-9-CM system, this condition was classified as 277.6, representing other disorders of enzyme metabolism.

What is the clinical significance of Biotinidase Deficiency?

Biotinidase deficiency is a rare, inherited metabolic disorder where the body cannot recycle the vitamin biotin. Without this vital enzyme activity, patients may experience neurological and cutaneous symptoms, including seizures, hypotonia, and skin rashes. Early identification through newborn screening is critical because biotinidase deficiency is highly treatable if managed with daily biotin supplementation before symptoms manifest.

Is Biotinidase Deficiency hereditary?

Yes, biotinidase deficiency is inherited in an autosomal recessive pattern. This means that both parents must carry a mutation in the BTD gene to pass the condition to their child. When both parents are carriers, there is a 25% chance with each pregnancy that the child will be born with biotinidase deficiency.

How is Biotinidase Deficiency classified?

The medical community categorizes biotinidase deficiency based on the residual enzyme activity measured in the blood:

• Profound biotinidase deficiency: Less than 10% of normal enzyme activity.


• Partial biotinidase deficiency: Between 10% and 30% of normal enzyme activity.

How does the community support those with Biotinidase Deficiency?

Navigating a rare metabolic diagnosis can feel isolating. At DiseaseMaps.org, 14 members have shared their experiences living with biotinidase deficiency. Connecting with others who understand the nuances of lifelong metabolic management can provide both practical tips and emotional support for families managing biotinidase deficiency.

Next steps

• Consult a metabolic specialist or a clinical geneticist to confirm your diagnosis and treatment plan.


• Ensure strict adherence to biotin supplementation as prescribed by your metabolic physician.


• Connect with the 14 members of the DiseaseMaps.org community to share resources and experiences.


• Schedule regular follow-ups to monitor biotin levels and neurological health.

Medical disclaimer: This information is for educational purposes only and does not substitute professional medical advice, diagnosis, or treatment.

References

• NIH Genetic and Rare Diseases Information Center (GARD): Biotinidase deficiency.


• Orphanet: Biotinidase deficiency (ORPHA:125).


• OMIM (Online Mendelian Inheritance in Man): Biotinidase Deficiency; BTD.


• National Library of Medicine (MedlinePlus): Biotinidase deficiency.