Wiki Selecting weeks of gestation Z3A....

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Code: Z3A
Weeks of gestation
Note: Codes from category Z3A are for use, only on the maternal record, to indicate the weeks of gestation of the pregnancy, if known.
Code first complications of pregnancy, childbirth and the puerperium (O09-O9A)

Category Notes
Persons encountering health services in circumstances related to reproduction (Z30-Z3A)

Coding Guidelines
Factors influencing health status and contact with health services (Z00-Z99)
Note: Z codes represent reasons for encounters. A corresponding procedure code must accompany a Z code if a procedure is performed. Categories Z00-Z99 are provided for occasions when circumstances other than a disease, injury or external cause classifiable to categories A00-Y89 are recorded as 'diagnoses' or 'problems'. This can arise in two main ways:
(a) When a person who may or may not be sick encounters the health services for some specific purpose, such as to receive limited care or service for a current condition, to donate an organ or tissue, to receive prophylactic vaccination (immunization), or to discuss a problem which is in itself not a disease or injury.
(b) When some circumstance or problem is present which influences the person's health status but is not in itself a current illness or injury.
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Clarification needed--example: If a patient presents for a high risk ultrasound and per LMP and first trimester scan is 34 weeks, but during the ultrasound is found to be measuring large and is 37 weeks (per that day's ultrasound measurements). Provider documents both sets of weeks gestation in the ultrasound report--which is the appropriate one to use in coding the Z3A.___ (week number) selection?
 

tracylc10

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I would want to say that you would go with the original scan. Has the md been concerned with the size of the baby the entire time? or is this new? Does the pt have gestational dm? Are they concerned about a big baby due to this? If they were questioning the dates, I would think that they would have rechecked earlier in the pregnancy. Again, I would go with the original scan unless told otherwise by the md.
 
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