ICD-10 Code for NIHSS

The default ICD-10-CM 2027 code for nihss (National Institutes of Health Stroke Scale) is R29.7 – National Institutes of Health Stroke Scale (NIHSS) score (a header – choose a more specific code). More specific codes depend on the details documented, as listed in the official index (1 codes, 0 billable).

Main code
R29.7 – National Institutes of Health Stroke Scale (NIHSS) score
Billable
No – header code

How to choose the right code

Start with the main term, then pick the indented subterm that matches the documentation (type, cause, site, laterality, episode of care). Always confirm the code in the tabular list: follow its Excludes1/Excludes2, “code first” and “use additional code” notes, and add a 7th character where required.

Source: CDC/NCHS ICD-10-CM FY2027 alphabetic index.