Definition of Disorders Of The Thyroid Gland Or Thyroid Hormones System: Disorders due to dysfunction of thyroid gland and regulation systems of thyroid hormone actions including dysfunction of the pituitary, hypothalamus, or thyroid hormone receptors.
ICD 11 Code For Hypothyroidism
5A00.0 Congenital hypothyroidism
Definition of Congenital hypothyroidism: Hypothyroidism is a condition where the thyroid gland produces too little or no thyroid hormone, and the condition arises at birth. Common clinical features include decreased activity and increased sleep, feeding difficulty and constipation, prolonged jaundice, myxedematous facies, large fontanels (especially posterior), macroglossia, a distended abdomen with umbilical hernia, and hypotonia.
- Congenital central hypothyroidism (5A61.41)
5A00.00 Permanent congenital hypothyroidism with diffuse goitre
Definition of Permanent congenital hypothyroidism with diffuse goitre: A condition caused by a partial or complete loss of thyroid function due to failure of the thyroid to correctly develop during the antenatal period. This condition is characterised by a swollen, smooth thyroid gland, and in infants by a dull look, puffy face, and thick tongue that sticks out. This condition may also present with choking episodes, constipation, dry brittle hair, jaundice, lack of muscle tone, low hairline, poor feeding, short height, sleepiness, or sluggishness.
- transitory congenital goitre with normal function (KB62)
5A00.01 Permanent congenital hypothyroidism without goitre
Definition of Permanent congenital hypothyroidism without goitre: This is a permanent congenital state in which the thyroid gland does not make enough thyroid hormone. This diagnosis is without swelling of the thyroid gland.
5A00.02 Pendred syndrome
Definition of Pendred syndrome: Pendred syndrome is characterised by the association of congenital bilateral neurosensory deafness, thyroid goitre, cochleovestibular malformation and potential vestibular dysfunction.
5A00.03 Transient congenital hypothyroidism
Definition of Transient congenital hypothyroidism: Transient congenital hypothyroidism is defined as transient thyroid dysfunction with mildly elevated thyroid-stimulating hormone (TSH) and low thyroxine (FT4) levels which return to normal either very promptly and spontaneously, or after several months of thyroxine therapy. The disorder is due to a variety of causes including iodine deficiency or exposure to iodine-containing compounds, transplacental passage of blocking maternal antibodies, and dyshormonogenesis.
- Transitory congenital goitre with normal function (KB62)
5A00.04 Congenital hypothyroidism due to iodine deficiency
Definition of Congenital hypothyroidism due to iodine deficiency: Hypothyroidism is a condition which arises at birth where the thyroid gland produces too little or no thyroid hormone and it can be induced by iodine-deficiency.
- Subclinical iodine-deficiency hypothyroidism (5A00.22)
5A00.0Y Other specified congenital hypothyroidism
5A00.0Z Congenital hypothyroidism unspecified
5A00.1 Iodine-deficiency-related thyroid disorders or allied conditions
Definition of Iodine-deficiency-related thyroid disorders or allied conditions: Any condition caused by aberrant thyroid function due to a deficiency of iodine. Confirmation is by blood test.
- congenital iodine-deficiency syndrome (5A00.04)
- Subclinical iodine-deficiency hypothyroidism (5A00.22)
5A00.10 Iodine-deficiency-related diffuse goitre
Definition of Iodine-deficiency-related diffuse goitre: Diffuse enlargement of the thyroid gland due to Iodine-deficiency
5A00.11 Iodine-deficiency-related multinodular goitre
Definition of Iodine-deficiency-related multinodular goitre: Multinodular enlargement of the thyroid gland due to Iodine-deficiency
- Iodine-deficiency-related nodular goitre
5A00.1Z Iodine-deficiency-related thyroid disorders or allied conditions unspecified
5A00.2 Acquired hypothyroidism
Definition of Acquired hypothyroidism: Acquired hypothyroidism is a condition where the thyroid gland produces too little or no thyroid hormone, and the condition arises only after birth.
- Postprocedural hypothyroidism (5D40)
- iodine-deficiency-related hypothyroidism (5A00.1)
- Acquired central hypothyroidism (5A61.40)
- Dementia due to acquired hypothyroidism (6D85.Y)
5A00.20 Hypothyroidism due to medicaments or other exogenous substances
Definition of Hypothyroidism due to medicaments or other exogenous substances: A condition caused by an underactive thyroid due to a medicaments or other exogenous substances. This condition may present with fatigue, increased sensitivity to cold, constipation, dry skin, weight gain, muscle weakness, elevated blood cholesterol, muscle aches, joint pain or swelling, heavier or irregular menstrual periods, thinning hair, depression, or impaired memory.
5A00.21 Myxoedema coma
Definition of Myxoedema coma: A life-threatening hypothyroid condition with long-standing severe untreated hypothyroidism in whom adaptive mechanisms fail to maintain homeostasis.
5A00.22 Subclinical iodine-deficiency hypothyroidism
Definition of Subclinical iodine-deficiency hypothyroidism: A condition with elevated serum TSH level, but with normal thyroid hormone levels, which is induced by iodine-deficiency
5A00.2Y Other specified acquired hypothyroidism
5A00.2Z Acquired hypothyroidism unspecified
5A00.Z Hypothyroidism unspecified
Definition of Nontoxic goitre: Enlargement of the thyroid gland due to follicular multiplication, unaccompanied by hyperthyroidism or thyrotoxicosis
ICD 11 Code For Nontoxic goitre
5A01 Nontoxic goitre
- congenital goitre NOS (5A00.00)
- congenital parenchymatous goitre (5A00.00)
- iodine-deficiency-related goitre (5A00.1)
- congenital diffuse goitre (5A00.00)
5A01.0 Nontoxic diffuse goitre
Definition of Nontoxic diffuse goitre: Diffuse enlargement of the thyroid gland due to follicular multiplication, unaccompanied by hyperthyroidism or thyrotoxicosis
5A01.1 Nontoxic single thyroid nodule
Definition of Nontoxic single thyroid nodule: Single tumour of the thyroid gland due to follicular multiplication, unaccompanied by hyperthyroidism or thyrotoxicosis
5A01.2 Nontoxic multinodular goitre
Definition of Nontoxic multinodular goitre: Multiple nodules of the thyroid gland due to follicular multiplication, unaccompanied by hyperthyroidism or thyrotoxicosis
5A01.Z Nontoxic goitre unspecified
Definition of Thyrotoxicosis: A hypermetabolic condition associated with elevated levels of free thyroxine and/or free triiodothyronine resulting in excess synthesis and secretion of thyroid hormone
ICD 11 Code For Thyrotoxicosis
- neonatal thyrotoxicosis (KB62.0)
- Dysthyroid exophthalmos (9A20.00)
5A02.0 Thyrotoxicosis with diffuse goitre
Definition of Thyrotoxicosis with diffuse goitre: Thyrotoxicosis occurs by the ingestion of excessive amounts of exogenous thyroid hormone in the form of thyroid hormone supplements such as the most widely used supplement levothyroxine.
- Toxic diffuse goitre
- Graves disease
5A02.1 Thyrotoxicosis with toxic single thyroid nodule
- Thyrotoxicosis with toxic uninodular goitre
5A02.2 Thyrotoxicosis with toxic multinodular goitre
Definition of Thyrotoxicosis with toxic multinodular goitre: Thyrotoxicosis caused by functioning thyroid multinodules
5A02.3 Thyrotoxicosis from ectopic thyroid tissue
5A02.4 Thyrotoxicosis factitia
Definition of Thyrotoxicosis factitia: A condition of thyrotoxicosis caused by the ingestion of exogenous thyroid hormone
5A02.5 Thyroid crisis
Definition of Thyroid crisis: Thyrotoxic crisis (or thyroid storm) is a rare but severe complication of hyperthyroidism, which may occur when a thyrotoxic patient becomes very sick or physically stressed.
- Thyroid storm
5A02.6 Secondary hyperthyroidism
Definition of Secondary hyperthyroidism: Overproduction of thyroid hormone in the thyroid gland induced by dysfunction of the pituitary gland or hypothalamus.
- Code also the causing condition
5A02.Y Other specified thyrotoxicosis
5A02.Z Thyrotoxicosis unspecified
Definition of Thyroiditis: Thyroiditis is the inflammation of the thyroid gland. It includes acute and chronic forms of thyroiditis. Thyroiditis is usually caused by autoimmune reaction to the thyroid, resulting in inflammation and damage to the thyroid cells. The symptoms include fatigue, weight gain, depression, dry skin, and constipation.
ICD 11 Code For Thyroiditis
- Acquired hypothyroidism (5A00.2)
- Thyrotoxicosis (5A02)
- Postpartum thyroiditis (JB44.5)
5A03.0 Acute thyroiditis
Definition of Acute thyroiditis: Acute thyroiditis is a rare form of thyroiditis directly caused by an infection, frequently bacterial.
5A03.1 Subacute thyroiditis
Definition of Subacute thyroiditis: A self-limited thyroiditis associated with a triphasic clinical course of hyperthyroidism, hypothyroidism, and return to normal thyroid function. It is thought to be caused by a viral infection.
- de Quervain thyroiditis
- giant-cell thyroiditis
- granulomatous thyroiditis
- Autoimmune thyroiditis (5A03.2)
5A03.2 Autoimmune thyroiditis
Definition of Autoimmune thyroiditis: A chronic inflammatory disorder of the thyroid gland associated with abnormal circulatory antibodies.
5A03.20 Hashimoto thyroiditis
5A03.21 Painless thyroiditis
Definition of Painless thyroiditis: A destructive thyroiditis which has an autoimmune basis in the non-postpartum period. An inflammation of the thyroid gland characterised by transient hyperthyroidism, followed by hypothyroidism and then recovery.
5A03.2Y Other specified autoimmune thyroiditis
5A03.Y Other specified thyroiditis
5A03.Z Thyroiditis unspecified
Hypersecretion of calcitonin
Definition of Hypersecretion of calcitonin: This is the process of elaborating, releasing, and oozing a 32-amino acid linear polypeptide hormone that is produced in humans primarily by the parafollicular cells (also known as C-cells) of the thyroid, and in many other animals in the ultimobranchial body.
ICD 11 Code For Hypersecretion of calcitonin
5A04 Hypersecretion of calcitonin
- Hypersecretion of thyrocalcitonin
- C-cell hyperplasia of thyroid
Generalised resistance to thyroid hormone
Definition of Generalised resistance to thyroid hormone: Decreased thyroid hormone action, generally induced by mutation of thyroid hormone receptors.
ICD 11 Code For Generalised resistance to thyroid hormone
5A05 Generalised resistance to thyroid hormone
ICD 11 Code For Sick-euthyroid syndrome
5A06 Sick-euthyroid syndrome
Other specified disorders of the thyroid gland or thyroid hormones system
ICD 11 Code For Other specified disorders of the thyroid gland or thyroid hormones system
5A0Y Other specified disorders of the thyroid gland or thyroid hormones system
Disorders of the thyroid gland or thyroid hormones system unspecified
ICD 11 Code For Disorders of the thyroid gland or thyroid hormones system unspecified
5A0Z Disorders of the thyroid gland or thyroid hormones system unspecified