US · guidance
CMS Pub. 100-04, ch. 18, § 150.4
Common Working File (CWF)
The Common Working File (CWF) shall edit for the frequency of service limitations of
counseling to prevent tobacco use sessions and smoking and tobacco-use cessation counseling
services (99406, 99407) rendered to a beneficiary for a combined total of 8 sessions within a 12-month period. The beneficiary may receive another 8 sessions during a second or subsequent
year after 11 full months have passed since the first Medicare covered counseling session was
performed. To start the count for
the second or subsequent 12-month period, begin with the month after the month in which
the first Medicare covered counseling session was performed and count until 11 full months
have elapsed.
By entering the beneficiary’s health insurance claim number (HICN), providers have the
capability to view the number of sessions a beneficiary has received for this service via
inquiry through CWF.
History
(Rev. 11021; Issued: 10-01-21; Effective: 10-29-21; Implementation: 10-29-21)
Provenance
- Source
- cms.gov
- Retrieved
- 2026-08-25
- Edition
- iom-2026-08-25
- Content hash
5e4977da06bdba7e27c3f40c12fb7cc6398bbfff2790c09ea2af84023fd01965
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