G43.C Periodic headache syndromes in child or adult

Non-billable header with 2 child codes.

Applies from G43 Migraine

Excludes1 (never code together)

• headache NOS (R51.9)
• lower half migraine (G44.00)

Excludes2 (not included here)

• headache syndromes (G44.-)

Use additional code

• code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)

Notes

• the following terms are to be considered equivalent to intractable: pharmacoresistant (pharmacologically resistant), treatment resistant, refractory (medically) and poorly controlled

Codes under G43.C

• G43.C0 Periodic headache syndromes in child or adult, not intractable
• G43.C1 Periodic headache syndromes in child or adult, intractable

Code annotations containing back-references to G43.C

Back-references to G43

• Type 2 Excludes: G44 Other headache syndromes ("migraines (G43.-)")
• Type 2 Excludes: G44.1 Vascular headache, not elsewhere classified ("migraine (G43.-)")
• Type 2 Excludes: G89 Pain, not elsewhere classified ("migraines (G43.-)")
• Type 2 Excludes: R51 Headache ("migraine and other headache syndromes (G43-G44)")

Nearby codes

• G43.A0 Cyclical vomiting, in migraine, not intractable
• G43.A1 Cyclical vomiting, in migraine, intractable
• G43.B Ophthalmoplegic migraine
• G43.B0 Ophthalmoplegic migraine, not intractable
• G43.B1 Ophthalmoplegic migraine, intractable
• G43.C Periodic headache syndromes in child or adult (this code)
• G43.C0 Periodic headache syndromes in child or adult, not intractable
• G43.C1 Periodic headache syndromes in child or adult, intractable
• G43.D Abdominal migraine
• G43.D0 Abdominal migraine, not intractable
• G43.D1 Abdominal migraine, intractable