AHA Coding Clinic® for ICD-9 - 1990 Fourth Quarter

Concussion/Postconcussion Syndrome

A concussion (850.x-854.xx) results from a blow to the head severe enough to cause a transient or prolonged alteration of consciousness, which may be followed by amnesia, vertigo, nausea, and weak pulse. Breathing may be rapid or slow. The patient may experience a severe headache and blurred vision after regaining consciousness. The patient usually recovers completely within 24 to 48 hours. Postconcussion syndrome, 310.2, describes a variety of symptoms that are likely to occur for a variable period following a concussion. These symptoms may last up to a few weeks after the concussion. The symptoms most...

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