ICD-10 Code E80.20 – Unspecified Porphyria (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E80.20 – Unspecified porphyria
What it is
E80.20 identifies porphyria when the type is not specified in the documentation. Use it for a porphyria diagnosis without enough detail to name a specific inherited or acquired form.
Clinical signs
Clinical features vary; refer to documentation. Porphyria may present with abdominal pain, neurologic or psychiatric symptoms, photosensitivity, or dark urine, but you should code only what the record supports.
When to use this code
Use E80.20 when the provider documents porphyria but does not specify the subtype. It also fits encounters where the record confirms porphyria, yet available notes do not identify the exact disorder. If a specific porphyria is named, code that condition instead.
Do not use for
Do not use this code for a clearly documented specific porphyria or for symptoms alone without a diagnosis. Check documentation if the chart only suggests porphyria or lists a family history.
Coding tip
Query the provider when the porphyria type is unclear, because a more specific code may be available.