2027 ICD-10-CM Diagnosis Code R09.2Respiratory arrest
ICD-10-CM Codes›R00–R99›R00-R09›R09
- Billable — Valid for Submission
- MCC — Major Complication or Comorbidity
- Risk Adjusts — HCC 212
- Not Chronic
R09.2 is a billable ICD-10-CM diagnosis code for respiratory arrest. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 205 through 206, 791, 793. As a secondary diagnosis, it counts as a major complication or comorbidity (MCC) and places an inpatient stay in the highest severity level of its MS-DRG family. This status applies only when the patient is discharged alive, and not when the principal diagnosis is one of 55 closely related codes. 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 anoxic encephalopathy. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Respiratory failure; insufficiency; arrest.
For Medicare Advantage risk adjustment, R09.2 maps to CMS-HCC Category 212 (Respiratory Arrest) under the V28 model, adding a risk factor of about 0.370 for a community, non-dual, aged beneficiary in payment year 2027.
Code Identity
Code Classification
Medicare Risk Adjustment (HCC)Billing
R09.2 maps to a payment category in the CMS-HCC model used to risk-adjust Medicare Advantage payments. Weights are the published community factors for payment year 2027.
Source: CMS Payment Year 2027 risk adjustment mappings and model software. Weights are relative factors, not dollar amounts; a beneficiary's total RAF also includes demographics and interactions. Browse all CMS-HCC categories.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Anoxic encephalopathy
- Anoxic encephalopathy due to respiratory arrest
- Cardiorespiratory arrest
- Cardiorespiratory failure
- Cardiorespiratory failure during AND/OR resulting from a procedure
- Central nervous system depression
- Respiratory arrest
- Respiratory arrest preceding cardiac arrest
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to R09.2: its own notes plus those printed at R09 and Chapter 18. A note printed at a category, block or chapter applies to every code under it.
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
- Cardiorespiratory failure
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
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.
Notes
General instructions on how these codes are used.
- 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 R09.2, its category, or a range that includes it.
Excludes1 3
These codes carry an Excludes1 note naming R09.2: they are not reported together with it, unless the two conditions are unrelated.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
respiratory R09.2
cardiorespiratory See Also: Failure, heart; R09.2
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Respiratory Arrest
cessation of breathing function.
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 R09.2 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About R09.2Overview
What is the ICD-10 code for respiratory arrest?
The ICD-10-CM code for respiratory arrest is R09.2 (sometimes written as R092). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is R09.2 a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report respiratory arrest on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does R09.2 group to?
When respiratory arrest is the principal diagnosis on an inpatient stay, it groups to MS-DRG 793, 791, 206, 205, with relative weights from 0.9255 to 4.2192 depending on complications. Higher weights mean higher Medicare reimbursement.
Is R09.2 a CC or MCC?
CMS lists R09.2 as an MCC (major complication or comorbidity) for FY 2027. Reported as a secondary diagnosis, it places the inpatient stay in the highest-weighted DRG of its severity family. It carries this status only when the patient is discharged alive. It does not count when the principal diagnosis is one of the 55 closely related codes in its exclusion list.
Can R09.2 be a principal diagnosis?
Use it with care. This is a symptom code, so once a definitive diagnosis explaining the respiratory arrest is established, that condition takes the principal position instead.
What HCC is R09.2?
R09.2 (respiratory arrest) maps to CMS-HCC Category 212 (Respiratory Arrest), commonly written as HCC 212, in the CMS-HCC V28 model used for Medicare Advantage risk adjustment in payment year 2027. It mapped to HCC 83 under the retired V24 model. It also maps in the PACE (CMS-HCC V22), ESRD (V21), and ESRD (V24) models. It does not map to any RxHCC in the Part D prescription drug model.
Does R09.2 risk-adjust for Medicare Advantage payment?
Yes. When documented and reported on a Medicare Advantage encounter, R09.2 adds a risk adjustment factor of about 0.370 to the beneficiary's RAF score for a community, non-dual, aged enrollee (published V28 weights range from 0.258 to 0.662 depending on the payment segment). A more severe related category (HCC 211) supersedes it when both are reported. See the full factor table on the HCC 212 category page.
