Is E89.1 a billable ICD-10-CM code?

Yes. E89.1 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does E89.1 sit in the tabular list?

Endocrine, nutritional and metabolic diseases (E00-E89), in the block Postprocedural endocrine and metabolic complications and disorders, not elsewhere classified (E89).

What cannot be coded together with E89.1?

E89.1 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter.

E89.1

E89.1 — Postprocedural hypoinsulinemia

Billable / specific codeICD-10-CM

E89.1 is a billable, specific ICD-10-CM code for postprocedural hypoinsulinemia. 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.

transient postprocedural hyperglycemia (R73.9)
transient postprocedural hypoglycemia (E16.2)

Code first

The underlying condition must be sequenced before this code.

, if applicable, diabetes mellitus (postpancreatectomy) (postprocedural) (E13.-)

Use additional code

Add a secondary code to capture the detail described below.

code, if applicable, to identify:
acquired absence of pancreas (Z90.41-)
insulin use (Z79.4)

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Postpancreatectomy hyperglycemia
Postsurgical hypoinsulinemia

Excludes2 inherited from the categories above E89.1

Also inherited, and the opposite of Excludes1: these conditions are not part of E89.1, but a patient can have both, so you may code both.

Written on E89 — Postprocedural endocrine and metabolic complications and disorders, not elsewhere classified

intraoperative complications of endocrine system organ or structure (E36.0-, E36.1-, E36.8)

Other codes that can never be billed with E89.1

These codes carry an Excludes1 note pointing at E89.1. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading E89.1 alone.

R73Elevated blood glucose level

Risk adjustment

E89.1 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

E89.1 is named in 2 Medicare coverage policies — 2 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A56686Billing and Coding: HbA1c
A57361Billing and Coding: Monitored Anesthesia Care

How E89.1 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 E89.1.

Hypoinsulinemia, postprocedural
Postpancreatectomy hyperglycemia
Hyperglycemia, hyperglycemic›postpancreatectomy
Postprocedural›hypoinsulinemia
Complication›surgical procedure›hyperglycemia(postpancreatectomy)
Complication›surgical procedure›hypoinsulinemia(postpancreatectomy)
Complication›endocrine›postprocedural›hypoinsulinemia

Code history

E89.1 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share E89. If E89.1 is not quite right, the correct code is usually one of these.

Questions about E89.1

Is E89.1 a billable ICD-10-CM code?: Yes. E89.1 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does E89.1 sit in the tabular list?: Endocrine, nutritional and metabolic diseases (E00-E89), in the block Postprocedural endocrine and metabolic complications and disorders, not elsewhere classified (E89).
What cannot be coded together with E89.1?: E89.1 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter.