E80.20 – Unspecified porphyria

ICD-10-CM 2027 diagnosis code · Metabolic disorders

Billable code

ICD-10-CM code E80.20
Code
E80.20 (claims format: E8020)
Description
Unspecified porphyria
Billable
Yes – valid for HIPAA-covered transactions
Valid for
Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter
4. Endocrine, nutritional and metabolic diseases (E00-E89)
Block
E70-E88 Metabolic disorders
Parent codes
E80 › E80.2

Notes for E80.20

Applicable to:
  • Porphyria NOS

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

E80 – Disorders of porphyrin and bilirubin metabolism

Includes:
  • defects of catalase and peroxidase

Block E70-E88

Excludes1 (not coded here):
  • androgen insensitivity syndrome (E34.5-)
  • congenital adrenal hyperplasia (E25.0)
  • hemolytic anemias attributable to enzyme disorders (D55.-)
  • Marfan syndrome (Q87.4-)
  • 5-alpha-reductase deficiency (E29.1)
Excludes2 (not included here):
  • Ehlers-Danlos syndromes (Q79.6-)

Index terms for E80.20

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in E80.2

Frequently asked questions

What is ICD-10 code E80.20?

E80.20 is the ICD-10-CM code for unspecified porphyria, in the block E70-E88 (Metabolic disorders).

Is E80.20 a billable code?

Yes. E80.20 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does E80.20 belong to?

It belongs to category E80 – Disorders of porphyrin and bilirubin metabolism.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.