Using the following Alphabetic Index entry
Hypertension
Complicating
Childbirth (labor) O16.4
Pre-existing O10.92
With
heart disease O10.12
With renal disease O10.32
Pre-eclampsia O11.4
Renal disease O10.22
With heart disease O10.32
Essential O10.02
Secondary O10.42
What code is assigned for pre-existing essential hypertension complicating childbirth?
Group of answer choices
A. O16.4
B. O10.92
C. O10.02
D. O10.42