E22.2 — Syndrome of inappropriate secretion of antidiuretic hormone
E22.2 is a billable, specific ICD-10-CM code for syndrome of inappropriate secretion of antidiuretic hormone. It is valid for submission on a claim.
Other codes that can never be billed with E22.2
These codes carry an Excludes1 note pointing at E22.2. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading E22.2 alone.
- E87.1Hypo-osmolality and hyponatremia
Risk adjustment
E22.2 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
E22.2 is named in 8 Medicare coverage policies — 8 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 E22.2 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 E22.2.
- Antidiuretic hormone syndrome
- Schwartz-Bartter syndrome
- Secretion›antidiuretic hormone, inappropriate
- Syndrome›inappropriate secretion of antidiuretic hormone
- Syndrome›Schwartz-Bartter
- Hypersecretion›hormone›antidiuretic
- Inappropriate›secretion›antidiuretic hormone(ADH) (excessive)
- Inappropriate›secretion›pituitary(posterior)
- Secretion›hormone›antidiuretic, inappropriate(syndrome)
- Increase, increased›function›pituitary›posterior
- Perversion, perverted›function›pituitary gland›posterior lobe
Related codes at this level
Codes that share E22. If E22.2 is not quite right, the correct code is usually one of these.
Questions about E22.2
- Is E22.2 a billable ICD-10-CM code?
- Yes. E22.2 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does E22.2 sit in the tabular list?
- Endocrine, nutritional and metabolic diseases (E00-E89), in the block Disorders of other endocrine glands (E20-E35).