Final answer:
A home health agency is the appropriate service to contact for a client needing wound care and help with personal hygiene post-hospital discharge when a spouse is unable to assist.
Step-by-step explanation:
The nurse case manager who is planning care for a client in need of follow-up wound care and assistance with personal hygiene such as bed baths should contact a home health agency. Home health agencies provide a range of health care services including nursing care, wound care, and assistance with daily activities like bathing, directly to a patient's home. This service would be most appropriate given the client's spouse is not capable of performing these tasks.