G43.C

Periodic headache syndromes in child or adult

Non-billable header

G43.C is a non-billable header code. Use one of the more specific codes below.

Inclusion terms

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

Not coded here — never report together with this code.

Not included here — may be reported together when both conditions exist.

certain conditions originating in the perinatal period (P04-P96) (from G43)
certain infectious and parasitic diseases (A00-B99) (from G43)
complications of pregnancy, childbirth and the puerperium (O00-O9A) (from G43)
congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99) (from G43)
endocrine, nutritional and metabolic diseases (E00-E88) (from G43)
injury, poisoning and certain other consequences of external causes (S00-T88) (from G43)
neoplasms (C00-D49) (from G43)
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94) (from G43)
headache NOS (R51.9) (from G43)
headache syndromes (G44.-) (from G43)

Add a code to identify the following, if applicable.

code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5) (from G43)