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ICD-10-CM 2027 diagnosis code

G83.32Monoplegia, unspecified affecting left dominant side

✓ Billable / specific

G83.32 is a valid, billable ICD-10-CM code for monoplegia, unspecified affecting left dominant side. 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 G83.32

G83.32 is the ICD-10-CM diagnosis code for monoplegia, unspecified affecting left dominant side. It belongs to category G83 (other paralytic syndromes), block G80-G83 (cerebral palsy and other paralytic syndromes) 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 G83.3 (monoplegia, unspecified), G83.32 is specifically for monoplegia, unspecified affecting left dominant side. Related codes cover affecting unspecified side (G83.30), affecting right dominant side (G83.31), affecting right nondominant side (G83.33) and affecting left nondominant side (G83.34).

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 091 (Other Disorders of Nervous System with MCC, relative weight 1.7046), DRG 092 (Other Disorders of Nervous System with CC, relative weight 1.0239) and DRG 093 (Other Disorders of Nervous System without CC/MCC, relative weight 0.7783), 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 344.5 (unspecified monoplegia).

Notes that apply from higher levels

Instructions written at a parent level also apply to G83.32.

› From G83 Other paralytic syndromes
Note
  • This category is to be used only when the listed conditions are reported without further specification, or are stated to be old or longstanding but of unspecified cause. The category is also for use in multiple coding to identify these conditions resulting from any cause.
Includes
  • paralysis (complete) (incomplete), except as in G80-G82

Broader instructions also apply from Chapter 6: Diseases of the nervous system.

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 →
  • 344.5Unspecified monoplegiaapproximate

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 G83.32

Is G83.32 billable?

Yes. G83.32 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can G83.32 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict G83.32 as a principal diagnosis.

Is G83.32 a CC or MCC?

No. G83.32 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does G83.32 group to?

G83.32 is used in the MS-DRG v44.0 logic for MS-DRG 091 (Other Disorders of Nervous System with MCC), MS-DRG 092 (Other Disorders of Nervous System with CC) and MS-DRG 093 (Other Disorders of Nervous System without CC/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 G83.32?

The CMS General Equivalence Mappings map G83.32 to ICD-9-CM 344.5.