ICD-10-CM 2027 diagnosis code
G65.2Sequelae of toxic polyneuropathy
G65.2 is a valid, billable ICD-10-CM code for sequelae of toxic polyneuropathy. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About G65.2
G65.2 is the ICD-10-CM diagnosis code for sequelae of toxic polyneuropathy. It belongs to category G65 (sequelae of inflammatory and toxic polyneuropathies), block G60-G65 (polyneuropathies and other disorders of the peripheral nervous system) and chapter 6 (diseases of the nervous system). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.
Within G65 (sequelae of inflammatory and toxic polyneuropathies), G65.2 is specifically for sequelae of toxic polyneuropathy. Related codes cover Guillain-Barre syndrome (G65.0) and other inflammatory polyneuropathy (G65.1).
Code first: condition resulting from (sequela) of inflammatory and toxic polyneuropathies.
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 073 (Cranial and Peripheral Nerve Disorders with MCC, relative weight 1.5779) and DRG 074 (Cranial and Peripheral Nerve Disorders without MCC, relative weight 1.0173), in MDC 01 (Diseases and Disorders of the Nervous System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Before ICD-10, this condition was coded in ICD-9-CM as 357.4 (polyneuropathy in other diseases classified elsewhere).
Notes that apply from higher levels
Instructions written at a parent level also apply to G65.2.
› From G65 Sequelae of inflammatory and toxic polyneuropathies
- condition resulting from (sequela) of inflammatory and toxic polyneuropathies
Broader instructions also apply from G60-G65 Polyneuropathies and other disorders of the peripheral nervous system and Chapter 6: Diseases of the nervous system.
Alphabetic index entries
7 entriesTerms in the official ICD-10-CM index that lead to G65.2.
- Polyneuropathy (peripheral) › in (due to) › alcohol › sequelae
- Polyneuropathy (peripheral) › in (due to) › arsenic › sequelae
- Polyneuropathy (peripheral) › in (due to) › lead › sequelae
- Polyneuropathy (peripheral) › in (due to) › organophosphate compounds › sequelae
- Polyneuropathy (peripheral) › in (due to) › toxic agent NEC › sequelae
- Polyneuropathy (peripheral) › in (due to) › triorthocresyl phosphate › sequelae
- Polyneuropathy (peripheral) › lead › sequelae
MS-DRG v44.0 grouping
All DRGs →Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.
MDC 01 · Diseases and Disorders of the Nervous System
ICD-9-CM equivalent
Converter →- 357.4Polyneuropathy in other diseases classified elsewhereapproximate
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about G65.2
Is G65.2 billable?
- Yes. G65.2 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can G65.2 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict G65.2 as a principal diagnosis.
Is G65.2 a CC or MCC?
- No. G65.2 is neither a CC nor an MCC under MS-DRG v44.0.
What DRG does G65.2 group to?
- G65.2 is used in the MS-DRG v44.0 logic for MS-DRG 073 (Cranial and Peripheral Nerve Disorders with MCC) and MS-DRG 074 (Cranial and Peripheral Nerve Disorders without MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.
What is the ICD-9 code for G65.2?
- The CMS General Equivalence Mappings map G65.2 to ICD-9-CM 357.4.