G44.4: Drug-induced headache, not elsewhere classified inclusionTerm Medication overuse headache useAdditionalCode code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5) |
| G44.40: Drug-induced headache, not elsewhere classified, not intractable |
| G44.41: Drug-induced headache, not elsewhere classified, intractable |