2026 ICD-10-CM Diagnosis Code G47.34Idiopathic sleep related nonobstructive alveolar hypoventilation

ICD-10-CM Codes›G00–G99›G40-G47›G47

ICD-10-CM G47.34
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

G47.34 is a billable ICD-10-CM diagnosis code for idiopathic sleep related nonobstructive alveolar hypoventilation. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 11 through 13, 154 through 156. Coders also document this condition as alveolar sleep apnea. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Sleep wake disorders.

Code Identity

ICD-10-CM Code
G47.34
Billable Status
Yes — Valid for Submission
Code Describes
Idiopathic sleep related nonobstructive alveolar hypoventilation
Short Description
Idio sleep related nonobstructive alveolar hypoventilation
Parent Code
G47.3
Sleep apnea

Code Classification

ChapterG00–G99Diseases of the nervous system
SectionG40-G47Episodic and paroxysmal disorders
CategoryG47Sleep disorders
This CodeG47.34Idiopathic sleep related nonobstructive alveolar hypoventilation

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Alveolar sleep apnea
  • Central alveolar hypoventilation syndrome
  • Idiopathic sleep related non-obstructive alveolar hypoventilation
  • Perry syndrome
  • Sleep hypoventilation
  • Sleep related hypoventilation or hypoxemia

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Sleep related hypoxia

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR NVS016
Sleep wake disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Sleep Apnea

Sleep apnea is a common disorder that causes your breathing to stop or get very shallow. Breathing pauses can last from a few seconds to minutes. They may occur 30 times or more an hour.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert G47.34 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
327.24 Idiopath sleep hypovent
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About G47.34Overview

What is the ICD-10 code for idiopathic sleep related nonobstructive alveolar hypoventilation?

The ICD-10-CM code for idiopathic sleep related nonobstructive alveolar hypoventilation is G47.34 (sometimes written as G4734). It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Is G47.34 (Sleep apnea) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report idiopathic sleep related nonobstructive alveolar hypoventilation on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does G47.34 group to?

When idiopathic sleep related nonobstructive alveolar hypoventilation is the principal diagnosis on an inpatient stay, it groups to MS-DRG 11, 12, 13, 154, 155, 156, with relative weights from 0.6911 to 5.4541 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of G47.34?

Under the General Equivalence Mappings, idiopathic sleep related nonobstructive alveolar hypoventilation converts to ICD-9-CM 327.24 (idiopath sleep hypovent). The mapping is a direct match.