E27.40 — Unspecified adrenocortical insufficiency
E27.40 is a billable, specific ICD-10-CM code for unspecified adrenocortical insufficiency. It is valid for submission on a claim.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Adrenocortical insufficiency NOS
- Hypoaldosteronism
Risk adjustment
E27.40 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
E27.40 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.
- A57361Billing and Coding: Monitored Anesthesia Care
- A59186Billing and Coding: Magnesium
How E27.40 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 E27.40.
- Hypoadrenalism, hypoadrenia
- Hypoadrenocorticism
- Hypoaldosteronism
- Deficiency, deficient›corticoadrenal
- Hypofunction›adrenocortical
- Hypofunction›corticoadrenal NEC
- Insufficiency, insufficient›adrenal(gland)
- Insufficiency, insufficient›adrenocortical
- Insufficiency, insufficient›corticoadrenal
- Insufficiency, insufficient›suprarenal
Related codes at this level
Codes that share E27.4. If E27.40 is not quite right, the correct code is usually one of these.
Questions about E27.40
- Is E27.40 a billable ICD-10-CM code?
- Yes. E27.40 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does E27.40 sit in the tabular list?
- Endocrine, nutritional and metabolic diseases (E00-E89), in the block Disorders of other endocrine glands (E20-E35).