ICD-10 · PDGM grouping
E01 Iodine-deficiency related thyroid disorders and allied conditions
All 4 codes in the E01 family, with the PDGM clinical group, comorbidity subgroup and primary-position rule CMS assigns, read from the CMS grouper crosswalk v07.2.26 and the CDC FY2027 code file.
Codes in family
4
Can lead a claim
4
Cannot lead a claim
0
What CMS assigns to E01
All 4 codes group to MMTA - Endocrine. 1 of the 4 counts toward the Hypothyroidism comorbidity subgroup; 3 are assigned none. Every code can lead a claim.
- Hypothyroidism: counts toward the high comorbidity tier only in an interaction pair.
Every code in E01
Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.
| Code | Description | Primary position | Clinical group | Comorbidity subgroup |
|---|---|---|---|---|
| E01.0 | Iodine-deficiency related diffuse (endemic) goiter | Can lead a claim | I | None |
| E01.1 | Iodine-deficiency related multinodular (endemic) goiter | Can lead a claim | I | None |
| E01.2 | Iodine-deficiency related (endemic) goiter, unspecified | Can lead a claim | I | None |
| E01.8 | Other iodine-deficiency related thyroid disorders and allied conditionsCMS: Oth iodine-deficiency related thyroid disord and allied cond | Can lead a claim | I | Hypothyroidism |
Sources: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01, for the clinical group, comorbidity subgroup, code-first conventions and primary-position flags; CDC NCHS ICD-10-CM FY2027 code descriptions for the family title and code wording. This is the crosswalk Medicare runs a claim through. Grouping also depends on admission source, timing, the OASIS functional items and the rest of the diagnosis list.
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