Question: My ob-gyn saw a patient who was having problems breastfeeding her infant. What diagnosis code should I use? Montana Subscriber Answer: You should report Z39.1 (Encounter for care and examination of lactating mother). You do not need any other additional counseling code. You can also assign code O92.-- (Other disorders of breasts and disorders of lactation association with pregnancy and the puerperium), if the patient has a problem with the breast or lactation. Watch out: You should not report P92.1 (Regurgitation and rumination of newborn), P92.2 (Slow feeding of newborn), P92.8 (Other feeding problems of newborn), or P92.9 (Feeding problem of newborn, unspecified) for assistance given to and billed under the mother's medical record.