V45.89 is a postprocedural status code....it would not be appropriate in this situation.
Per coding guidelines,
Codes from chapter 11 and sequencing priority
Obstetric cases require codes from chapter 11, codes in the range 630-679, Complications of Pregnancy, Childbirth, and the Puerperium. Chapter 11 codes have sequencing priority over codes from other chapters. Additional codes from other chapters may be used in conjunction with chapter 11 codes to further specify conditions. Should the provider document that the pregnancy is incidental to the encounter, then code V22.2 should be used in place of any chapter 11 codes. It is the provider's responsibility to state that the condition being treated is not affecting the pregnancy.
Cordelia, DRG Auditor, CCS, CPC