Tetany

This code represents tetany, a neurological condition characterized by involuntary muscle contractions, cramps, and spasms. It is often caused by electrolyte imbalances, particularly hypocalcemia, or other metabolic disturbances affecting nerve and muscle function.

Assign this code when documentation explicitly states a diagnosis of tetany. This includes cases of latent or overt tetany, regardless of the underlying cause, if the tetanic symptoms are the primary focus of the encounter. Supporting documentation would describe muscle spasms, paresthesias, or positive Chvostek's or Trousseau's signs.

• Always code the underlying cause of tetany first, if known and documented (e.g., hypocalcemia, hypomagnesemia), followed by this code for the manifestation.
• Do not confuse tetany with tetanus; tetanus is an infectious disease with distinct coding.
• Ensure documentation differentiates between generalized muscle cramps (which may have other causes) and true tetany.