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 2026, 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
The ICD-10 code G65 category is used to classify the lasting effects, or sequelae, of inflammatory and toxic polyneuropathies—conditions that damage multiple peripheral nerves. These codes help document ongoing health issues that remain after the initial nerve inflammation or toxin exposure has resolved.
This section includes codes for the sequelae of specific nerve disorders. For example, G65.0 is assigned for residual problems following Guillain-Barré syndrome, a serious condition sometimes referred to as "ophthalmoplegia due to Guillain-Barré syndrome," which affects eye movement due to nerve damage. G65.1 covers sequelae from other inflammatory polyneuropathies not otherwise specified. Lastly, G65.2 describes nerve damage remaining after exposure to toxins, often called "toxic polyneuropathy" or "peripheral neuropathy caused by toxin." Using these ICD-10 codes ensures that the medical record accurately reflects ongoing complications from these nerve conditions for proper management and billing. This makes it easier to identify the specific type of nerve injury sequela when searching for the ICD-10 code for polyneuropathy sequelae.
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, 2025 through September 30, 2026. 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 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
