E02 — Subclinical iodine-deficiency hypothyroidism
E02 is a billable, specific ICD-10-CM code for subclinical iodine-deficiency hypothyroidism. It is valid for submission on a claim.
Other codes that can never be billed with E02
These codes carry an Excludes1 note pointing at E02. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading E02 alone.
Risk adjustment
E02 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
E02 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.
- A57326Billing and Coding: Electrocardiograms
- A57361Billing and Coding: Monitored Anesthesia Care
How E02 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 E02.
- Hypothyroidism›subclinical, iodine-deficiency related
- Hypothyroidism›iodine-deficiency›subclinical
- Hypothyroidism›due to›iodine-deficiency, acquired›subclinical
Questions about E02
- Is E02 a billable ICD-10-CM code?
- Yes. E02 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does E02 sit in the tabular list?
- Endocrine, nutritional and metabolic diseases (E00-E89), in the block Disorders of thyroid gland (E00-E07).