Hypothyroidism, unspecified

This code signifies a general diagnosis of underactive thyroid function where the specific cause or type of hypothyroidism has not been identified or documented. It indicates that the thyroid gland is not producing sufficient thyroid hormones, leading to a slowed metabolism.

Use this code when the medical record clearly states "hypothyroidism" without further specification of its etiology (e.g., primary, secondary, congenital, drug-induced). This code is appropriate when the provider has diagnosed hypothyroidism but has not yet determined the underlying cause, or when the documentation simply lacks that level of detail.

• Avoid using this code if more specific documentation regarding the type or cause of hypothyroidism is available (e.g., E03.0 for congenital, E03.2 for hypothyroidism due to iodine deficiency).
• Always query the provider for greater specificity if the documentation allows, as more specific codes often provide better data for quality measures and risk adjustment.
• This code should be sequenced as the primary diagnosis when it is the reason for the encounter, or as a secondary diagnosis if it is a co-morbidity affecting the patient's care.