CPT code
Hospital follow-up visit, long
In the order to send them
Why these codes
A psychiatrist's visits on an inpatient unit: psychiatric inpatient, then inpatient visit.
If a payer returns nothing
Payers don't all answer every service type. Send 30 (Health Benefit Plan Coverage) for the plan's general benefits.
Sources
X12 HIPAA 5010 service type code definitions; VerifyTX billing practice