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Effective Coding Under MS-DRGs - American Health Information ...

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<strong>Effective</strong> <strong>Coding</strong> <strong>Under</strong> <strong>MS</strong>-<strong>DRGs</strong><br />

Notes/Comments/Questions<br />

ICD-9-CM<br />

Principal Diagnosis<br />

• Defined by the Uniform Hospital Discharge<br />

Data Set (UHDDS), the principal diagnosis<br />

is “the condition established after study to<br />

be chiefly responsible for occasioning the<br />

admission of the patient to the hospital for<br />

care.”<br />

• The circumstances of admission, the diagnostic<br />

approach and the treatment rendered factor<br />

into principal diagnosis selection.<br />

5<br />

ICD-9-CM<br />

Additional Diagnosis<br />

• ICD-9-CM states that for reporting purposes the definition for<br />

“other diagnoses” is interpreted as additional conditions that<br />

affect patient care in terms of requiring:<br />

• clinical evaluation;<br />

• or therapeutic treatment;<br />

• or diagnostic procedures;<br />

• or extended length of hospital stay;<br />

• or increased nursing care and/or monitoring.<br />

• The UHDDS item #11-b defines Other Diagnoses as “all<br />

conditions that coexist at the time of admission, that develop<br />

subsequently, or that affect the treatment received and/or<br />

the length of stay. Diagnoses that relate to an earlier episode<br />

which have no bearing on the current hospital stay are to be<br />

excluded.”<br />

6<br />

AHIMA 2008 Audio Seminar Series 3<br />

CPT ® Codes Copyright 2007 by AMA. All Rights Reserved

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