Mary was excited at her last visit to find that she is pregnant. She came in for a prenatal checkup today because she wants to take excellent care of herself and her baby. Everything seems fine, and the physician told her to keep up the good work. The ICD-10 code for routine obstetric care will be found in which of the following series of codes? 

A. C00-D49
B. H00-H59
C. O00-O9A
D. P00-P96
E. Z00-Z99

E. Z00-Z99
The ICD-10 code for routine obstetric care will be found in Chapter 21, "Factors influencing health status and contact with health services," which replaces the V codes in ICD-9 and contains the code range Z00-Z99.