ICD-10-CM 2027 diagnosis code
G47.09Other insomnia
G47.09 is a valid, billable ICD-10-CM code for other insomnia. 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 G47.09
G47.09 is the ICD-10-CM diagnosis code for other insomnia. It belongs to category G47 (sleep disorders), block G40-G47 (episodic and paroxysmal disorders) 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 G47.0, choose G47.09 (Other insomnia) only when documentation doesn't support a more specific option: unspecified (G47.00) and due to medical condition (G47.01).
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 887 (Other Mental Disorder Diagnoses, relative weight 1.1139), in MDC 19 (Mental Diseases and Disorders), 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 327.09 (other organic insomnia).
Notes that apply from higher levels
Instructions written at a parent level also apply to G47.09.
› From G47.0 Insomnia
- alcohol related insomnia (F10.182, F10.282, F10.982)
- drug-related insomnia (F11.182, F11.282, F11.982, F13.182, F13.282, F13.982, F14.182, F14.282, F14.982, F15.182, F15.282, F15.982, F19.182, F19.282, F19.982)
- idiopathic insomnia (F51.01)
- insomnia due to a mental disorder (F51.05)
- insomnia not due to a substance or known physiological condition (F51.0-)
- nonorganic insomnia (F51.0-)
- primary insomnia (F51.01)
- sleep apnea (G47.3-)
› From G47 Sleep disorders
Broader instructions also apply from Chapter 6: Diseases of the nervous system.
Alphabetic index entries
1 entriesTerms in the official ICD-10-CM index that lead to G47.09.
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 19 · Mental Diseases and Disorders
ICD-9-CM equivalent
Converter →- 327.09Other organic insomniaapproximate
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 G47.09
Is G47.09 billable?
- Yes. G47.09 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can G47.09 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict G47.09 as a principal diagnosis.
Is G47.09 a CC or MCC?
- No. G47.09 is neither a CC nor an MCC under MS-DRG v44.0.
What DRG does G47.09 group to?
- G47.09 is used in the MS-DRG v44.0 logic for MS-DRG 887 (Other Mental Disorder Diagnoses). 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 G47.09?
- The CMS General Equivalence Mappings map G47.09 to ICD-9-CM 327.09.