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ICD-10-CM 2027 diagnosis code

G81.01Flaccid hemiplegia affecting right dominant side

✓ Billable / specificCC — complication/comorbidity

G81.01 is a valid, billable ICD-10-CM code for flaccid hemiplegia affecting right 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 G81.01

G81.01 is the ICD-10-CM diagnosis code for flaccid hemiplegia affecting right dominant side. It belongs to category G81 (hemiplegia and hemiparesis), 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 G81.0 (flaccid hemiplegia), G81.01 is specifically for flaccid hemiplegia affecting right dominant side. Related codes cover affecting unspecified side (G81.00), affecting left dominant side (G81.02), affecting right nondominant side (G81.03) and affecting left nondominant side (G81.04).

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 056 (Degenerative Nervous System Disorders with MCC, relative weight 2.2655) and DRG 057 (Degenerative Nervous System Disorders without MCC, relative weight 1.2838), 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 342.01 (flaccid hemiplegia and hemiparesis affecting dominant side).

Notes that apply from higher levels

Instructions written at a parent level also apply to G81.01.

› From G81 Hemiplegia and hemiparesis
Note
  • This category is to be used only when hemiplegia (complete)(incomplete) is reported without further specification, or is stated to be old or longstanding but of unspecified cause. The category is also for use in multiple coding to identify these types of hemiplegia resulting from any cause.
Excludes1

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 →
  • 342.01Flaccid hemiplegia and hemiparesis affecting dominant sideapproximate

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 G81.01

Is G81.01 billable?

Yes. G81.01 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can G81.01 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict G81.01 as a principal diagnosis.

Is G81.01 a CC or MCC?

G81.01 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.

What DRG does G81.01 group to?

G81.01 is used in the MS-DRG v44.0 logic for MS-DRG 056 (Degenerative Nervous System Disorders with MCC) and MS-DRG 057 (Degenerative Nervous System 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 G81.01?

The CMS General Equivalence Mappings map G81.01 to ICD-9-CM 342.01.