When bone marrow
aspiration is performed alone, the appropriate code to report
is CPT code 38220. When a bone marrow biopsy is performed,
the appropriate code is CPT code 38221 (bone marrow biopsy);
this code cannot be reported with CPT code 20220 (bone biopsy).
CPT codes 38220 and 38221 may only be reported together if
the two procedures are performed at separate sites or at separate
patient encounters. Separate sites include bone marrow aspiration
and biopsy in different bones or two separate skin incisions
over the same bone. When both a bone marrow biopsy (CPT code
38221) and bone marrow aspiration (CPT code 38220) are performed
at the same site through the same skin incision, only the
bone marrow biopsy (CPT 38221) should be reported.