E86.0 — Dehydration
E86.0 is a billable, specific ICD-10-CM code for dehydration. It is valid for submission on a claim.
Other codes that can never be billed with E86.0
These codes carry an Excludes1 note pointing at E86.0. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading E86.0 alone.
- R68.2Dry mouth, unspecified
Risk adjustment
E86.0 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
E86.0 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.
- A56500Billing and Coding: Cardiac Catheterization and Coronary Angiography
- A56505Billing and Coding: Transesophageal Echocardiography (TEE)
- A56625Billing and Coding: Echocardiography
- A57189Billing and Coding: Serum Magnesium
How E86.0 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 E86.0.
- Anhydration
- Anhydremia
- Dehydration
- Luetscher's syndrome(dehydration)
- Cachexia›dehydration
- Syndrome›Luetscher's(dehydration)
- Dry, dryness›mouth›due to dehydration
Related codes at this level
Codes that share E86. If E86.0 is not quite right, the correct code is usually one of these.
Questions about E86.0
- Is E86.0 a billable ICD-10-CM code?
- Yes. E86.0 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does E86.0 sit in the tabular list?
- Endocrine, nutritional and metabolic diseases (E00-E89), in the block Metabolic disorders (E70-E88).