3. ENDOCRINE, NUTRITIONAL AND METABOLIC DISEASES, AND IMMUNITY DISORDERS (240-279)
Excludes:
endocrine and metabolic disturbances specific
to the fetus and newborn (775.0-775.9)
Note:
All neoplasms, whether functionally active or not, are classified in Chapter 2. Codes in Chapter 3 (i.e., 242.8, 246.0, 251-253, 255-259) may be used to identify such functional activity associated with any neoplasm, or by ectopic endocrine tissue.
DISORDERS OF THYROID GLAND (240-246)
240: Simple and unspecified goiter
241: Nontoxic nodular goiter
Excludes:
adenoma of thyroid (226)
cystadenoma of thyroid (226)
242: Thyrotoxicosis with or without goiter
Excludes:
neonatal thyrotoxicosis (775.3)
The following fifth-digit subclassification is for use with category 242:
0 without mention of thyrotoxic crisis or storm
1 with mention of thyrotoxic crisis or storm
243: Congenital hypothyroidism
Congenital thyroid insufficiency
Cretinism (athyrotic) (endemic)
Use additional code to identify associated intellectual disabilities
Excludes:
congenital (dyshormonogenic) goiter (246.1)
244: Acquired hypothyroidism
Includes:
athyroidism (acquired)
hypothyroidism (acquired)
myxedema (adult) (juvenile)
thyroid (gland) insufficiency (acquired)
245: Thyroiditis
246: Other disorders of thyroid

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