Sequelae of inflammatory and toxic polyneuropathies (G65) ICD-10-CM
The G65 code range covers sequelae of inflammatory and toxic polyneuropathies with 4 ICD-10-CM diagnosis codes. 3 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Code First
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.
- condition resulting from (sequela) of inflammatory and toxic polyneuropathies
Codes in the G65 Range 4 codes · 3 billable
About the G65 Code Range
These are lasting effects of inflammatory or toxic conditions affecting multiple nerves outside the brain and spinal cord.
The subdivisions separate effects following G65.0 Guillain-Barre syndrome, G65.1 another inflammatory polyneuropathy, and G65.2 toxic polyneuropathy.
Questions About This Page
How many billable codes are in the G65 range?
Of the 4 codes in this range, 3 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the G65 range classify?
The range classifies sequelae of inflammatory and toxic polyneuropathies. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
