Which status of service contract records are eligilble for billing

Hi Experts,

I have one question related to service contract billing.

Which status(based on contract header status)
of service contracts are eligible for billing.

I believe it is ACTIVE.

We have custom program for billing.In that main cursor query extracting records with below condition.

hdr.sts_code not in ('ENTERED','CANCELLED')

After that,there are other cursors and  billing API etc. to process  records for billing

I want to replace this condition with

hdr.sts_code='ACTIVE'  to improve the performance by reducing the records count.

Is there any other eligilible  status, do we need to consider for billing.Please correct me if I am wrong.