Other porphyria

This code represents various rare, inherited metabolic disorders characterized by deficiencies in specific enzymes within the heme biosynthesis pathway, leading to the accumulation of porphyrin precursors or porphyrins. These disorders can manifest with diverse symptoms, including neurological dysfunction, photosensitivity, and acute attacks, depending on the specific enzyme deficiency.

Use this code for porphyria types not specifically classified elsewhere, such as congenital erythropoietic porphyria (CEP), hepatoerythropoietic porphyria (HEP), or porphyria cutanea tarda (PCT) when the specific type is not documented or is atypical. Documentation should clearly indicate a diagnosis of porphyria that does not fit more specific ICD-10-CM codes.

• Do not use this code if a more specific porphyria diagnosis (e.g., acute intermittent porphyria, variegate porphyria) is documented.
• Review medical records carefully for specific enzyme deficiencies or clinical presentations that might point to a more precise porphyria type.
• Consider sequencing this code as a primary diagnosis when it is the reason for the encounter, or as a secondary diagnosis when it is a co-morbidity impacting patient care.