ICD-10 Coding – Size/Dates Discrepancy vs. Fetal Growth Issues
Use of the uterine size/dates discrepancy code set (O26.841-O26.849) is appropriate when the measurement between the symphysis pubis and the top of the fundus is not consistent with the stated dates.
There may be a diagnosis of uterine size/dates discrepancy, whether the fetus itself is large, small, or appropriately sized.
The ICD-10 codes for poor fetal growth (O36.5910-O36.5999) or excessive fetal growth (O36.60X0-O36.63X9) should be used when the fetus measures either small or large for dates.
The codes for uterine size/dates discrepancy and poor or excessive fetal growth may be used together if the conditions coexist.
Example: 27 week singleton with poor fetal growth, and uterine size/dates discrepancy:
O36.5920 Maternal care for other known or suspected poor fetal growth
O26.842 Uterine size-date discrepancy complicating pregnancy
Z3A.27 27 weeks gestation