ICD-10-CM 2027
ICD-10 code for Cretin
From the official ICD-10-CM alphabetic index entry “Cretin, cretinism (congenital) (endemic) (nongoitrous) (sporadic)”. Page updated September 29, 2026.
About coding Cretin
The ICD-10-CM code for Cretin is E00.9 (Congenital iodine-deficiency syndrome, unspecified). The official index lists 6 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on E00.9.
Within E00, choose E00.9 (unspecified) only when documentation doesn't support a more specific option: neurological type (E00.0), myxedematous type (E00.1) and mixed type (E00.2).
Use an additional code (F70-F79) to identify associated intellectual disabilities.
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific Cretin codes (official index)
- pelvis
- with disproportion (fetopelvic) O33.0 — Maternal care for disproportion due to deformity of maternal pelvic bones
- causing obstructed labor O65.0 — Obstructed labor due to deformed pelvis
- type
- hypothyroid E00.1 — Congenital iodine-deficiency syndrome, myxedematous type
- mixed E00.2 — Congenital iodine-deficiency syndrome, mixed type
- myxedematous E00.1 — Congenital iodine-deficiency syndrome, myxedematous type
- neurological E00.0 — Congenital iodine-deficiency syndrome, neurological type
Common questions about Cretin ICD-10 codes
What is the ICD-10 code for Cretin?
- E00.9 — Congenital iodine-deficiency syndrome, unspecified. More specific codes apply when the documentation supports them: O33.0, O65.0, E00.1, E00.2 and others below.
Is E00.9 billable?
- Yes. E00.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can E00.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict E00.9 as a principal diagnosis.
Is E00.9 a CC or MCC?
- No. E00.9 is neither a CC nor an MCC under MS-DRG v44.0.