E22.9 — Hyperfunction of pituitary gland, unspecified
E22.9 is a billable, specific ICD-10-CM code for hyperfunction of pituitary gland, unspecified. It is valid for submission on a claim.
Risk adjustment
E22.9 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
E22.9 is named in 5 Medicare coverage policies — 5 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
- A57204Billing and Coding: MRI and CT Scans of the Head and Neck
How E22.9 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 E22.9.
- Hyperpituitarism
- Hyperfunction›pituitary(gland) (anterior)
- Hypersecretion›hormone›pituitary
- Increase, increased›function›pituitary(gland) (anterior) (lobe)
Related codes at this level
Codes that share E22. If E22.9 is not quite right, the correct code is usually one of these.
Questions about E22.9
- Is E22.9 a billable ICD-10-CM code?
- Yes. E22.9 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does E22.9 sit in the tabular list?
- Endocrine, nutritional and metabolic diseases (E00-E89), in the block Disorders of other endocrine glands (E20-E35).