DISORDERS OF THYROID GLAND (240-246)

Simple and unspecified goiter
Nontoxic nodular goiter
Thyrotoxicosis with or without goiter
Congenital hypothyroidism
Acquired hypothyroidism
Thyroiditis
Other disorders of thyroid

240 Simple and unspecified goiter

240.0 Goiter, specified as simple

Any condition classifiable to 240.9, specified as simple

240.9 Goiter, unspecified

Enlargement of thyroid
Goiter or struma:
NOS
diffuse colloid
endemic
hyperplastic
nontoxic (diffuse)
parenchymatous
sporadic
Excludes: congenital (dyshormonogenic) goiter (246.1)

241 Nontoxic nodular goiter

Excludes: adenoma of thyroid (226)
cystadenoma of thyroid (226)

241.0 Nontoxic uninodular goiter

Thyroid nodule
Uninodular goiter (nontoxic)

241.1 Nontoxic multinodular goiter

Multinodular goiter (nontoxic)

241.9 Unspecified nontoxic nodular goiter

Adenomatous goiter
Nodular goiter (nontoxic) NOS
Struma nodosa (simplex)

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

242.0 Toxic diffuse goiter

Basedow's disease
Exophthalmic or toxic goiter NOS
Graves' disease
Primary thyroid hyperplasia

242.1 Toxic uninodular goiter

Thyroid nodule, toxic or with hyperthyroidism
Uninodular goiter, toxic or with hyperthyroidism

242.2 Toxic multinodular goiter

Secondary thyroid hyperplasia

242.3 Toxic nodular goiter, unspecified

Adenomatous goiter, toxic or with hyperthyroidism
Nodular goiter, toxic or with hyperthyroidism
Struma nodosa, toxic or with hyperthyroidism
Any condition classifiable to 241.9 specified as toxic or with hyperthyroidism

242.4 Thyrotoxicosis from ectopic thyroid nodule

242.8 Thyrotoxicosis of other specified origin

Overproduction of thyroid-stimulating hormone [TSH] Thyrotoxicosis:
factitia from ingestion of excessive thyroid material
Use additional E code to identify cause, if drug-induced

242.9 Thyrotoxicosis without mention of goiter or other cause

Hyperthyroidism NOS
Thyrotoxicosis NOS

243 Congenital hypothyroidism

Congenital thyroid insufficiency
Cretinism (athyrotic) (endemic)
Use additional code to identify associated mental retardation
Excludes: congenital (dyshormonogenic) goiter (246.1)

244 Acquired hypothyroidism

Includes: athyroidism (acquired)
hypothyroidism (acquired)
myxedema (adult) (juvenile)
thyroid (gland) insufficiency (acquired)

244.0 Postsurgical hypothyroidism

244.1 Other postablative hypothyroidism

Hypothyroidism following therapy, such as irradiation

244.2 Iodine hypothyroidism

Hypothyroidism resulting from administration or ingestion of iodide
Use additional E to identify drug

244.3 Other iatrogenic hypothyroidism

Hypothyroidism resulting from:
P-aminosalicylic acid [PAS] Phenylbutazone
Resorcinol
Iatrogenic hypothyroidism NOS
Use additional E to identify drug

244.8 Other specified acquired hypothyroidism

Secondary hypothyroidism NEC

244.9 Unspecified hypothyroidism

Hypothyroidism, primary or NOS
Myxedema, primary or NOS

245 Thyroiditis

245.0 Acute thyroiditis

Abscess of thyroid
Thyroiditis:
nonsuppurative, acute
pyogenic
suppurative
Use additional code to identify organism

245.1 Subacute thyroiditis

Thyroiditis:
de Quervain's
giant cell
granulomatous
viral

245.2 Chronic lymphocytic thyroiditis

Hashimoto's disease
Struma lymphomatosa
Thyroiditis:
autoimmune
lymphocytic (chronic)

245.3 Chronic fibrous thyroiditis

Struma fibrosa
Thyroiditis:
invasive (fibrous)
ligneous
Riedel's

245.4 Iatrogenic thyroiditis

Use additional E to identify cause

245.8 Other and unspecified chronic thyroiditis

Chronic thyroiditis:
NOS
nonspecific

245.9 Thyroiditis, unspecified

Thyroiditis NOS

246 Other disorders of thyroid

246.0 Disorders of thyrocalcitonin secretion

Hypersecretion of calcitonin or thyrocalcitonin

246.1 Dyshormonogenic goiter

Congenital (dyshormonogenic) goiter
Goiter due to enzyme defect in synthesis of thyroid hormone
Goitrous cretinism (sporadic)

246.2 Cyst of thyroid

Excludes: cystadenoma of thyroid (226)

246.3 Hemorrhage and infarction of thyroid

246.8 Other specified disorders of thyroid

Abnormality of thyroid-binding globulin
Atrophy of thyroid
Hyper-TBG-nemia
Hypo-TBG-nemia