Question: Our neurologist is treating a patient for seizures that he considers -cognitive deficits.- The patient is not at the level I would normally code as mentally retarded. What diagnosis should I use? Answer: ICD-9 includes a new diagnosis this year that might apply to this case: 331.83 (Mild cognitive impairment, so stated). The descriptor lists quite a few
Pennsylvania Subscriber
exclusions, however (such as 310.8, Mild memory disturbance; and 780.97, Change in mental status), so read the list carefully before automatically reporting it.
Other options pertain to neurologic deficit: 781.99 (Other symptoms involving nervous and musculoskeletal systems), 436 (Acute, but ill-defined, cerebrovascular disease), 435.9 (Unspecified transient cerebral ischemia), and 438.xx (Late effects of cerebrovascular disease).
Narrow your coding options by studying your physician's documentation. Use those details to help determine the best-fitting diagnosis.