What are the principal and secondary ICD-10-CM diagnosis codes for a patient with a diagnosis of severe headache due to migraine?

• A. G43.611, I63.9
• B. C61, D63.0
• C. I21.09, I10
• D. E11.621, L97.421

Answer: (A)

The principal diagnosis code for a patient with severe headache due to migraine is G43.611, which specifically denotes a migraine without aura that is intractable or severe. This code indicates that the patient is experiencing significant severity in their migraine condition, which aligns with the description of the headache as severe.

In this scenario, the secondary code I63.9 could potentially be included if the patient has a related cerebrovascular condition, however, it is more common to specify the primary issue directly associated with the patient's current condition as the main reason for care.

Correctly identifying and using ICD-10-CM codes is crucial for effective medical documentation and billing. By using G43.611, healthcare providers can accurately communicate the primary reason for the patient's visit and subsequent treatment, ensuring they receive the appropriate care and that the records reflect the patient's condition accurately.

The other choices present codes related to different diagnoses that would not correctly apply to a patient specifically suffering from a severe headache due to migraine, thus making them unsuitable in this context.