Diseases of the nervous sys comp pregnancy, third trimester

This code identifies neurological conditions that arise or are exacerbated during the third trimester of pregnancy. It encompasses a broad range of nervous system disorders, such as epilepsy, multiple sclerosis, or neuropathies, when they complicate the current pregnancy. The primary focus is on the impact of the neurological disease on the pregnant patient's health during the final trimester.

Apply this code when a pregnant patient in her third trimester is diagnosed with a pre-existing or newly developed nervous system disorder that is affecting the pregnancy. Documentation should clearly state the specific neurological condition and confirm its presence or impact during the third trimester. This code is used in conjunction with the specific code for the nervous system disorder.

• Always sequence the specific nervous system disorder code (e.g., G40.909 for epilepsy) before this obstetrical complication code.
• Ensure the medical record explicitly states the patient is in her third trimester.
• Do not use this code for nervous system conditions that are unrelated to or not complicating the pregnancy.