E03 vs E89.0
E03 and E89.0 can never be reported together. ICD-10-CM declares them mutually exclusive with an Excludes1 note, meaning the two conditions cannot occur in the same patient — so exactly one of them is correct for any given encounter.
The official note, declared on E03
postprocedural hypothyroidism (E89.0)
E03
Other hypothyroidism
Not billable
- Chapter 4
- Endocrine, nutritional and metabolic diseases
- Section
- E00-E07
E89.0
Postprocedural hypothyroidism
Billable
- Chapter 4
- Endocrine, nutritional and metabolic diseases
- Section
- E89
Use when the record says
- Postirradiation hypothyroidism
- Postsurgical hypothyroidism
Indexed under
- Absence › thyroid (of) (organ or part) (complete or partial)
- Hypothyroidism › postirradiation (acquired)
- Hypothyroidism › postprocedural (acquired)
- Hypothyroidism › postsurgical (acquired)
- Status › thyroidectomy (post)
Excludes1 is not always absolute: where two conditions covered by the note are genuinely unrelated, CMS guidance permits reporting both. Document the reasoning rather than assuming it. More on Excludes1 vs Excludes2 · FY2027