Medicare Claims Processing Manual (Pub. 100-04), Ch. 5 § 30.2
Applicable A/B MAC (B) CWF Type of Service Codes
30.2 - Applicable A/B MAC (B) CWF Type of Service Codes
(Rev. 1, 10-01-03)
The A/B MAC (B) assigns the type of service code before submitting the claim record to
CWF.
U = Occupational therapy
W= Physical therapy