E01.8 ICD-10-CA code: Other iodine-deficiency-related thyroid disorders and allied conditions
E01.8 is the ICD-10-CA code for “Other iodine-deficiency-related thyroid disorders and allied conditions” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
E01.8Other iodine-deficiency-related thyroid disorders and allied conditions
Short description: Oth iodine def rel thyrd disrd alld cond
ICD-10-CA · Canada · Also written E018
Index terms
Entries in CIHI’s alphabetical index that lead to E01.8. Searching the index by the condition the note names is how coders reach this code.
- Disorder (of), thyroid (gland), iodine deficiency related
- Hypothyroidism (acquired), iodine deficiency (acquired) NEC
- Hypothyroidism (acquired), due to, iodine deficiency (acquired) NEC
Notes for E01.8
As CIHI prints them, with any note E01.8 takes from the headings above it.
Includes
- Acquired iodine-deficiency hypothyroidism NOS
Excludes
Conditions classified elsewhere.
- Congenital iodine-deficiency syndrome (E00.-)subclinical iodine-deficiency hypothyroidism (E02)From E01 Iodine-deficiency-related thyroid disorders and allied conditions
- Complications of pregnancy, childbirth and the puerperium (O00-O99)symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)transitory endocrine and metabolic disorders specific to fetus and newborn (P70-P74)From Chapter 4: Endocrine, nutritional and metabolic diseases (E00-E90)
Note
- All neoplasms, whether functionally active or not, are classified in Chapter II. Appropriate codes in this chapter (i.e. E05.8)(E07.0) (E16-E31)(E34.-) may be used, if desired, as additional codes to indicate either functional activity by neoplasms and ectopic endocrine tissue or hyperfunction and hypofunction of endocrine glands associated with neoplasms and other conditions classified elsewhere.From Chapter 4: Endocrine, nutritional and metabolic diseases (E00-E90)
Where E01.8 sits
- 1ChapterChapter 4: Endocrine, nutritional and metabolic diseases (E00-E90)
- 2Block E00-E07Disorders of thyroid gland
- 3Category E01Iodine-deficiency-related thyroid disorders and allied conditions
- 4Valid code E01.8Other iodine-deficiency-related thyroid disorders and allied conditions
Source and release
- Data release
- ICD-10-CA · FY 2026–2027
- Effective date
- Apr 1, 2026
- Publisher
- CIHI
This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does ICD-10-CA code E01.8 mean?
E01.8 is the ICD-10-CA code for “Other iodine-deficiency-related thyroid disorders and allied conditions” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is E01.8 in ICD-10-CA?
E01.8 sits under E01 Iodine-deficiency-related thyroid disorders and allied conditions, within E00-E07 Disorders of thyroid gland, within Chapter 4: Endocrine, nutritional and metabolic diseases (E00-E90).
What coding notes apply to E01.8?
ICD-10-CA lists Includes, Excludes, Note notes for E01.8, including those from the headings it sits under. They are listed on this page with where each one comes from.
Which ICD-10-CA release does this page use?
It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.