Guidelines › Hemiplegia and monoplegia: dominant and nondominant side

Hemiplegia and monoplegia: dominant and nondominant side

Official text from the FY2027 ICD-10-CM Official Guidelines for Coding and Reporting. The wording is quoted exactly.

Guidelines I.C.9.d.1; I.C.6.a

“Should the affected side be documented, but not specified as dominant or nondominant, and the classification system does not indicate a default, code selection is as follows:”

“For ambidextrous patients, the default should be dominant.”

“If the left side is affected, the default is non-dominant.”

“If the right side is affected, the default is dominant.”

Where this applies

270 billable codes. Source: FY 2027 ICD-10-CM Official Guidelines for Coding and Reporting, effective October 1, 2026. Full Guidelines (PDF, CMS)

The Guidelines are the authority for assigning codes, and following them is required under HIPAA. This page quotes them for convenience and is not a substitute for the official document. See the Terms and Disclaimer.