D81.5
Purine nucleoside phosphorylase [PNP] deficiency
Approximate Synonyms
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Purine nucleoside phosphorylase deficiency
Clinical Information
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Pnp reversibly catalyzes the phosphorolysis of the purine nucleosides, deoxy)inosine and deoxy)guanosine, to their respective purine bases and the corresponding ribose-1-phosphate. Deficiency in this enzyme is an autosomal recessive cause of combined immunodeficiency.
Details
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D81.5 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
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The 2023 edition of ICD-10-CM D81.5 became effective on October 1, 2022.
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This is the American ICD-10-CM version of D81.5 – other international versions of ICD-10 D81.5 may differ.