E04.1 Nontoxic single thyroid nodule

Instructional Notes:

E04.1
Description: Nontoxic single thyroid nodule
Inclusion Term:
- Colloid nodule (cystic) (thyroid)
- Nontoxic uninodular goiter
- Thyroid (cystic) nodule NOS
↓
E04
Description: Other nontoxic goiter
Exclude1:
- congenital goiter (NOS) (diffuse) (parenchymatous) (E03.0)
- iodine-deficiency related goiter (E00-E02)
↓
E00-E07
Description: Disorders of thyroid gland (E00-E07)
↓
E00-E89
Description: Endocrine, nutritional and metabolic diseases
Exclude1:
- transitory endocrine and metabolic disorders specific to newborn (P70-P74)
Notes:
- All neoplasms, whether functionally active or not, are classified in Chapter 2. Appropriate codes in this chapter (i.e. E05.8, E07.0, E16-E31, E34.-) may be used 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.