Optum360 coding books logo
    Contact Us   (7 a.m.–7 p.m. CST)
  Home > Coding Central Articles > Coding Central Articles  
Coding Central
Coding Central Home
Inside Track to ICD-10
Coding Central Articles
Code This!
Case Studies
Chargemaster Corner

Articles for:
January 25, 2018

Four Tests Added to List of CLIA Waived Tests

In early January, the Centers for Medicare and Medicaid Services (CMS) announced new waived tests... Learn More

New and Revised Vaccine Codes Added to 2018 CPT Code Book

The American Medical Association (AMA) added and revised several vaccine CPT codes for its 201... Learn More

OIG Recommends Measures for Curbing Opioid Misuse and Fraud

Office of Inspector General testimony before the House Committee on Ways and Means in January ... Learn More

View Article Archive

To subscribe, paste this link into your preferred feedreader, or click on one of the buttons below:

Medical Coding News Archives

Specialty Focus: OB/GYN—To report trimester or not?

December 1, 2015:

ICD-10-CM guideline 1.C.15.a.3 notes that many of the codes in chapter 15 have a final character that indicates the trimester the care is rendered. But reporting the trimester is not automatic. For example, the majority of missed abortions occur in the first trimester or the early weeks of the second trimester. This guideline also states that if the trimester is not part of the code, “it is because the condition always occurs in a specific trimester, or the concept of trimester of pregnancy is not applicable.”

Have a look at this case study from the ICD-10-CM Coding Workbook for OB/GYN which illustrates this issue.

A 26-year-old gravida 1, para 0 was approximately 9 weeks’ gestation. She presents today for evaluation with bleeding and passing of tissue and clots. Exam in the office confirms the cervix was dilated with tissue and blood passing from the cervical os. The patient had experienced an incomplete spontaneous abortion. She was emergently scheduled for suction dilatation and evacuation.

The diagnosis codes for this case are the following. Note that the trimester character is not reported.

    O02.1 Missed abortion

    Z3A.09 9 weeks gestation of pregnancy

Earn 10 CEUs from AAPC with the2016 ICD-10-CM Coding Workbook for OB/GYN. Just pass the online exam with a score of 75% or better. CEUs are also available for the each of the ICD-10-CM Coding Workbooks.


Sign in to
Your Account
Forgot your username?
Forgot your password?
Don't have an account?
It's easy to create one.
Promo code

Have a promotional source code? Enter it here:

What is this?