AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2021 Issue 3; Ask the Editor
Mild Cognitive Impairment, Unspecified Degenerative Disease of Nervous System and Excludes1 Instruction
The provider documented both mild cognitive impairment and unspecified degenerative disease of the nervous system on the same encounter. The Excludes1 note at code G31.84, Mild cognitive impairment, so stated, excludes code G31.9, Degenerative disease of the nervous system, unspecified. Based on the advice in Coding Clinic, Fourth Quarter 2018, pages 87-88, only the code referenced in the Excludes1 note is assigned, therefore, should code G31.9 be assigned, because it is the referenced code, even though a more specific condition, mild cognitive impairment is documented? ...
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Article Overview
This premium article reviews a coding question involving ICD-10-CM documentation, an Excludes1 note, and guidance referenced from Coding Clinic. It is intended for coders and auditors who need to understand how the article frames the relationship between the documented conditions and the referenced coding advice without relying on the premium content.
Why This Topic Matters
Accurate interpretation of Excludes1 notes is important for compliant diagnosis coding and for avoiding conflicting code assignment when multiple nervous system conditions are documented together.
What You Will Learn
- How the article frames an ICD-10-CM Excludes1 issue
- What documentation scenario prompted the coding question
- How Coding Clinic guidance is referenced in relation to the encounter
- Why the article is relevant to diagnosis coding review
Who Should Read This
- Medical coders
- Coding auditors
- Compliance staff
- Clinical documentation improvement professionals
Codes Discussed
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