2027 ICD-10-CM Diagnosis Code R06.4Hyperventilation

ICD-10-CM Codes›R00–R99›R00-R09›R06

ICD-10-CM R06.4
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

R06.4 is a billable ICD-10-CM diagnosis code for hyperventilation. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 204. As a symptom code, it should not be used as a principal diagnosis once a related definitive diagnosis has been established. Coders also document this condition as acidotic hyperventilation. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Respiratory signs and symptoms.

Code Identity

ICD-10-CM Code
R06.4
Billable Status
Yes — Valid for Submission
Code Describes
Hyperventilation
Short Description
Hyperventilation
Same as the full description in the CMS dataset.
Parent Code
R06
Abnormalities of breathing

Code Classification

ChapterR00–R99Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
SectionR00-R09Symptoms and signs involving the circulatory and respiratory systems
CategoryR06Abnormalities of breathing
This CodeR06.4Hyperventilation

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acidotic hyperventilation
  • Deep breathing
  • Hyperpnea
  • Hyperventilation
  • Intermittent hyperventilation

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to R06.4: its own notes plus those printed at R06 and Chapter 18. A note printed at a category, block or chapter applies to every code under it.

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

On R06.4 itself
  • psychogenic hyperventilation (F45.8)
From R06 Abnormalities of breathing applies to 17 codes
  • acute respiratory distress syndrome (J80)
  • respiratory arrest (R09.2)
  • respiratory arrest of newborn (P28.81)
  • respiratory distress syndrome of newborn (P22.-)
  • respiratory failure (J96.-)
  • respiratory failure of newborn (P28.5)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 18 (R00-R99) Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified applies to 774 codes
  • abnormal findings on antenatal screening of mother (O28.-)
  • certain conditions originating in the perinatal period (P04-P96)
  • signs and symptoms classified in the body system chapters
  • signs and symptoms of breast (N63, N64.5)

Notes

General instructions on how these codes are used.

From Chapter 18 (R00-R99) Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified applies to 774 codes
  • This chapter includes symptoms, signs, abnormal results of clinical or other investigative procedures, and ill-defined conditions regarding which no diagnosis classifiable elsewhere is recorded.
  • Signs and symptoms that point rather definitely to a given diagnosis have been assigned to a category in other chapters of the classification. In general, categories in this chapter include the less well-defined conditions and symptoms that, without the necessary study of the case to establish a final diagnosis, point perhaps equally to two or more diseases or to two or more systems of the body. Practically all categories in the chapter could be designated 'not otherwise specified', 'unknown etiology' or 'transient'. The Alphabetical Index should be consulted to determine which symptoms and signs are to be allocated here and which to other chapters. The residual subcategories, numbered .8, are generally provided for other relevant symptoms that cannot be allocated elsewhere in the classification.
  • The conditions and signs or symptoms included in categories R00-R94 consist of:
  • (a) cases for which no more specific diagnosis can be made even after all the facts bearing on the case have been investigated;
  • (b) signs or symptoms existing at the time of initial encounter that proved to be transient and whose causes could not be determined;
  • (c) provisional diagnosis in a patient who failed to return for further investigation or care;
  • (d) cases referred elsewhere for investigation or treatment before the diagnosis was made;
  • (e) cases in which a more precise diagnosis was not available for any other reason;
  • (f) certain symptoms, for which supplementary information is provided, that represent important problems in medical care in their own right.

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name R06.4, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming R06.4: they are not reported together with it, unless the two conditions are unrelated.

  • R09.0 Asphyxia and hypoxemia
    hyperventilation (R06.4)

Code Also 1

These codes say R06.4 may also be needed to fully describe the condition. The note gives no sequencing direction.

  • E20.810 Autosomal dominant hypocalcemia
    respiratory distress (J80, R06.-) names R06.-, which includes this code

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 SYM013
Respiratory signs and symptoms
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Hyperventilation

    a pulmonary ventilation rate faster than is metabolically necessary for the exchange of gases. it is the result of an increased frequency of breathing, an increased tidal volume, or a combination of both. it causes an excess intake of oxygen and the blowing off of carbon dioxide.

Patient EducationClinical

Breathing Problems

When you're short of breath, it's hard or uncomfortable for you to take in the oxygen your body needs. You may feel as if you're not getting enough air. Sometimes you can have mild breathing problems because of a stuffy nose or intense exercise. But shortness of breath can also be a sign of a serious disease.

Read the full article at MedlinePlus

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

Convert R06.4 to ICD-9-CMHistory

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

ICD-9-CM
786.01 Hyperventilation
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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About R06.4Overview

What is the ICD-10 code for hyperventilation?

The ICD-10-CM code for hyperventilation is R06.4 (sometimes written as R064). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is R06.4 (Abnormalities of breathing) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report hyperventilation on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does R06.4 group to?

When hyperventilation is the principal diagnosis on an inpatient stay, it groups to MS-DRG 204 (respiratory Signs and Symptoms), which carries a relative weight of 0.8208. Higher weights mean higher Medicare reimbursement.

Can R06.4 be a principal diagnosis?

Use it with care. This is a symptom code, so once a definitive diagnosis explaining the hyperventilation is established, that condition takes the principal position instead.

Can R06.4 be reported with F45.8?

Not as a rule. The Excludes1 note on R06.4 lists "psychogenic hyperventilation (F45.8)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).