MDC
Query Knowledge
OCG/Coding
Clinical Concepts
CDI Wildcard
100

This MDC includes OR Procedures such as CABG and cardiac valve procedures

MDC 5

100

This standard guides compliant documentation query practices across the U.S.

What are ACDIS/AHIMA Query Practice Guidelines

100

This term refers to a condition that occurs after a procedure.

What is a postoperative complication?

100

This term describes weight loss and muscle wasting related to chronic disease like cancer or CHF.

What is cachexia?”

100

The team responsible for improving documentation accuracy and supporting quality outcomes.

What is CDI?

200

This MDC covers diagnoses like pneumonia, COPD, and respiratory failure

MDC 4

200

The OCG are updated at this frequency.

What is annually (Oct 1)?

300

A patient with acute stroke and hemiplegia would be assigned to this MDC

MDC 1

300

This type of query is acceptable when clinical indicators support more than one possible diagnosis.

What is a multiple-choice query?

300

This coding rule applies when two codes are needed to fully describe a condition involving a manifestation.

What is etiology/manifestation coding?

300

This quality metric bundle includes PSI 03, PSI 13, and PSI 14.

What is PSI 90

400

A liver transplant would fall under this MDC

MDC 7 

400

Section II of the OCG covers this.

What is selection of the principal diagnosis?

500

This MDC contains the highest-weighted MSDRGs overall due to the cost of its surgeries.

MDC 5

500

These three conditions must be met for a complication to be coded.

What are cause and effect, clinical significance, and provider documentation?