Is ICD-10-CM code E80 billable?

No, E80 (Disorders of porphyrin and bilirubin metabolism) is a non-billable ICD-10-CM code. It must be coded to a more specific subcategory before it can be used for reimbursement.

What chapter does ICD-10-CM code E80 belong to?

E80 belongs to Chapter 4 of the ICD-10-CM tabular list: E00–E89 (Endocrine, Nutritional and Metabolic Diseases).

E80Not billable, use a more specific code below

Disorders of porphyrin and bilirubin metabolism

In Metabolic disorders (E70-E88), chapter 4: Endocrine, Nutritional and Metabolic Diseases

10 billable codes under E80: 6 are a CC; 6 map to HCC 50 (Amyloidosis, Porphyria, and Other Specified Metabolic Disorders).A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment. An HCC counts toward a Medicare Advantage patient's risk score.

Instructional notes

Includes: conditions that are coded here

defects of catalase and peroxidase

Also applies, from Metabolic disorders (E70-E88)

These notes sit on E70-E88 and apply to every code under it, including E80.

Excludes1: not coded here, use a different code

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, code separately if applicable

Ehlers-Danlos syndromes (Q79.6-)

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Covers diabetes mellitus coding, including type, insulin and drug use, pump malfunction and secondary diabetes, plus obesity and obesity class codes.

Diabetes mellitus (page 39)
Obesity (page 42)

Read Section I.C.4 (page 39)

All codes under E80

E80 can't be used on a claim. Pick a billable code below; grey headings group them.

E80 MS-DRGs

As the principal diagnosis, the billable codes under E80 group to MS-DRG 642, 441, 442, or 443 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

DRG 642 Inborn and Other Disorders of Metabolism (6 of 10 codes)
DRG 441 Disorders of Liver Except Malignancy, Cirrhosis or Alcoholic Hepatitis with MCC (4 of 10 codes)
DRG 442 Disorders of Liver Except Malignancy, Cirrhosis or Alcoholic Hepatitis with CC (4 of 10 codes)
DRG 443 Disorders of Liver Except Malignancy, Cirrhosis or Alcoholic Hepatitis without CC/MCC (4 of 10 codes)

About the condition

Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.

Metabolic Disorders

Metabolism is the process your body uses to get or make energy from the food you eat. Food is made up of proteins, carbohydrates, and fats. Chemicals in your digestive system break the food parts down into sugars and acids, your body's fuel. Your body can use this fuel right away, or it can store the energy in your body tissues, such as your liver, muscles, and body fat.

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.