Is E31.1 a billable ICD-10-CM code?

Yes. E31.1 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does E31.1 sit in the tabular list?

Endocrine, nutritional and metabolic diseases (E00-E89), in the block Disorders of other endocrine glands (E20-E35).

What cannot be coded together with E31.1?

E31.1 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

E31.1

E31.1 — Polyglandular hyperfunction

Billable / specific codeICD-10-CM

E31.1 is a billable, specific ICD-10-CM code for polyglandular hyperfunction. It is valid for submission on a claim.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

multiple endocrine adenomatosis (E31.2-)
multiple endocrine neoplasia (E31.2-)

Risk adjustment

E31.1 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

HCC 51 Addison's and Cushing's Diseases, Acromegaly, and Other Specified Endocrine Disorders0.510 RAF

Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.

Medicare coverage

E31.1 is named in 1 Medicare coverage policy — 1 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A57204Billing and Coding: MRI and CT Scans of the Head and Neck

How E31.1 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to E31.1.

Hyperfunction›polyglandular

Related codes at this level

Codes that share E31. If E31.1 is not quite right, the correct code is usually one of these.

Questions about E31.1

Is E31.1 a billable ICD-10-CM code?: Yes. E31.1 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does E31.1 sit in the tabular list?: Endocrine, nutritional and metabolic diseases (E00-E89), in the block Disorders of other endocrine glands (E20-E35).
What cannot be coded together with E31.1?: E31.1 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.