Syncope and collapse

This code represents a sudden, temporary loss of consciousness and postural tone, often due to transient global cerebral hypoperfusion, followed by spontaneous recovery. It encompasses both syncope (fainting) and non-syncopal collapse where the patient loses the ability to stand or maintain an upright position without losing consciousness.

Use this code when documentation clearly indicates an episode of syncope, presyncope, or a non-specific collapse where the underlying cause is not yet determined or is not the primary diagnosis. This code is appropriate for initial presentations of unexplained fainting spells or when the patient presents with a history of such events requiring investigation.

• Do not use this code as a primary diagnosis if a definitive cause for the syncope or collapse has been established (e.g., cardiac arrhythmia, seizure).
• Always sequence this code as a secondary diagnosis if the underlying cause is known and coded.
• Distinguish from seizure disorders (e.g., 780.3x) or transient ischemic attacks (e.g., 435.x) based on clinical documentation of neurological symptoms.