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ICD-10-CM 2027 diagnosis code

G62.81Critical illness polyneuropathy

✓ Billable / specificCC — complication/comorbidity

G62.81 is a valid, billable ICD-10-CM code for critical illness 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 G62.81

G62.81 is the ICD-10-CM diagnosis code for critical illness polyneuropathy. It belongs to category G62 (other and unspecified 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 G62.8 (other specified polyneuropathies), G62.81 is specifically for critical illness polyneuropathy. Related codes cover Radiation-induced polyneuropathy (G62.82) and other specified polyneuropathies (G62.89).

As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.

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 357.82 (critical illness polyneuropathy).

Coding notes

Applicable toConditions and synonyms classified to this code
  • Acute motor neuropathy

Notes that apply from higher levels

Instructions written at a parent level also apply to G62.81.

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

3 entries

Terms in the official ICD-10-CM index that lead to G62.81.

Codes whose notes reference G62.81

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.

ICD-9-CM equivalent

Converter →
  • 357.82Critical illness polyneuropathyexact

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about G62.81

Is G62.81 billable?

Yes. G62.81 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can G62.81 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict G62.81 as a principal diagnosis.

Is G62.81 a CC or MCC?

G62.81 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.

What DRG does G62.81 group to?

G62.81 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 G62.81?

The CMS General Equivalence Mappings map G62.81 to ICD-9-CM 357.82.