AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2016 Issue 4; ICD-10-CM NEW/REVISED CODES
National Institutes of Health Stroke Scale (NIHSS) Scores
A new subcategory (R29.7-) has been created to report the National Institutes of Health Stroke Scale (NIHSS) scores. The NIHSS scale is a clinical assessment tool to evaluate and document neurological status in acute stroke patients. The NIHSS is a 15-item neurologic examination stroke scale used to evaluate the effect of acute cerebral infarction on the levels of consciousness, language, neglect, visual-field loss, extraocular movement, motor strength, ataxia, dysarthria, and sensory loss. Codes from R29.7- are intended to be used as secondary codes as the acute cerebral infarction (I63-) should be coded first. The codes discretely identify...
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Article Overview
This article covers the ICD-10-CM update introducing a subcategory for National Institutes of Health Stroke Scale documentation and explains the general context for reporting these scores in acute stroke records. It is aimed at coders, CDI professionals, and clinical documentation stakeholders who need to understand how the new diagnosis category fits into stroke-related documentation and sequencing guidance. The article also addresses source documentation considerations and includes a brief coding example.
Why This Topic Matters
NIH Stroke Scale scores are commonly used in acute stroke care, and the new diagnosis category gives coders a standardized way to capture that information in the record. Understanding the update helps support consistent documentation and proper reporting in stroke cases.
Article Sections
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Overview of the new subcategory
Introduces the newly created diagnosis subcategory and places it in the context of stroke documentation. It explains the general purpose of the scale and the type of clinical information it captures.
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Reporting and documentation guidance
Summarizes general guidance on when the new category is used, how it relates to the associated stroke diagnosis, and what kinds of source documentation may support assignment. It also notes how conflicting documentation is handled at a high level.
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Clinical example
Provides a short sample scenario showing how the stroke-related diagnoses and NIHSS score may appear in a coded record.
What You Will Learn
- What the NIH Stroke Scale documentation category is intended to capture
- How the new stroke-related diagnosis category fits into acute stroke reporting
- What general documentation sources may support assignment
- What topics are included in the article’s coding example
Who Should Read This
- Medical coders
- Clinical documentation integrity specialists
- Health information management professionals
- Stroke care documentation staff
Codes Discussed
Code Ranges Discussed
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