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Endocrinology – Thyroid ICD Coding
UT SOUTHWESTERN MEDICAL CENTER AT DALLAS
Division of Endocrinology Thyroid ICD Coding
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:
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Endocrinology – Thyroid ICD Coding
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)
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Endocrinology – Thyroid ICD Coding
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 code to identify drug
244.3 Other iatrogenic hypothyroidism Hypothyroidism resulting from: P-aminosalicylic acid [PAS] Phenylbutazone Resorcinol Iatrogenic hypothyroidism NOS
Use additional E code 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)
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Endocrinology – Thyroid ICD Coding
245.3 Chronic fibrous thyroiditis Struma fibrosa Thyroiditis: Invasive (fibrous) Ligneous Riedel's
245.4 Iatrogenic thyroiditis Use additional E code 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
246.9 Unspecified disorder of thyroid
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