Is E23.2 a billable ICD-10-CM code?

Yes. E23.2 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does E23.2 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 E23.2?

E23.2 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

E23.2

E23.2 — Diabetes insipidus

Billable / specific codeICD-10-CM

E23.2 is a billable, specific ICD-10-CM code for diabetes insipidus. 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.

nephrogenic diabetes insipidus (N25.1)

Other codes that can never be billed with E23.2

These codes carry an Excludes1 note pointing at E23.2. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading E23.2 alone.

N25.1Nephrogenic diabetes insipidus
E87Other disorders of fluid, electrolyte and acid-base balance

Risk adjustment

E23.2 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Medicare coverage

E23.2 is named in 7 Medicare coverage policies — 7 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A56551Billing and Coding: Visual Fields Testing
A56612Billing and Coding: CT of the Head
A56631Billing and Coding: Thoracic Aortography and Carotid, Vertebral, and Subclavian Angiography
A56799Billing and Coding: Visual Fields Testing

How E23.2 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 E23.2.

Deficiency, deficient›antidiuretic hormone
Deficiency, deficient›vasopressin
Diabetes, diabetic›insipidus
Hyposecretion›antidiuretic hormone
Hyposecretion›vasopressin
Diabetes, diabetic›insipidus›pituitary
Perversion, perverted›function›pituitary gland
Inappropriate›secretion›antidiuretic hormone›deficiency

Related codes at this level

Codes that share E23. If E23.2 is not quite right, the correct code is usually one of these.

Questions about E23.2

Is E23.2 a billable ICD-10-CM code?: Yes. E23.2 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does E23.2 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 E23.2?: E23.2 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.