When did you last take prescription medication for headache on a daily basis to help prevent a severe headache from happening in the first place [PhenX]

LOINC: 65391-5Type: OtherCPT: N/A

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A diagnostic test used to support clinical decision-making.

Sources
  1. [1]LOINC — Logical Observation Identifiers Names and Codes. Regenstrief Institute