G44.20 | Tension-type headache, unspecified | NON-BILLABLE CODE |
G44.201 | Tension-type headache, unspecified, intractable | BILLABLE CODE |
G44.209 | Tension-type headache, unspecified, not intractable | BILLABLE CODE |
G44.21 | Episodic tension-type headache | NON-BILLABLE CODE |
G44.211 | Episodic tension-type headache, intractable | BILLABLE CODE |
G44.219 | Episodic tension-type headache, not intractable | BILLABLE CODE |
G44.22 | Chronic tension-type headache | NON-BILLABLE CODE |
G44.221 | Chronic tension-type headache, intractable | BILLABLE CODE |
G44.229 | Chronic tension-type headache, not intractable | BILLABLE CODE |