diagnosis for post op hip and knee replacement

I do not see any dx for this condition
the V43.64 appears to the diagnosis for the actual procedure
What should be used?

post-op encounter diagnosis codes

For a postop encounter after knee and hip surgery, use code V54.81 followed by V43.64 and V43.65.
Aftercare visit codes cover situations when the initial treatment of a disease or injury has been performed and the patient requires continued care during the healing or recovery phase, or for the long-term consequences of the disease. The aftercare V code should not be used if treatment is directed toward a current, acute disease, complaint or injury, the acute diagnosis code is to be used in these cases.
The aftercare codes are generally first listed to explain the specific reason for the encounter. An aftercare code may be used as an additional code when some type of aftercare is provided in addition to the reason for encounter and no diagnosis code is applicable.