2027 ICD-10-CM Diagnosis Code R23.0Cyanosis
ICD-10-CM Codes›R00–R99›R20-R23›R23
- Billable — Valid for Submission
- Not Chronic
R23.0 is a billable ICD-10-CM diagnosis code for cyanosis. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 947 through 948. As a symptom code, it should not be used as a principal diagnosis once a related definitive diagnosis has been established. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Skin/Subcutaneous signs and symptoms.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Bier anemic spots, cyanosis, and urticaria-like eruption syndrome
- Biers spots
- Blue extremities
- Blue skin
- Central cyanosis
- Cyanosis
- Cyanosis of skin
- Cyanosis of skin over lesion
- Cyanotic attack
- Finding of color of limb
- Goes blue
- Hemoglobinopathy with cyanosis
- Hypercyanotic spell due to congenital heart disease
- Local cyanosis
- Local disease
- Orthostatic intolerance
- Peripheral cyanosis
- Postural orthostatic tachycardia syndrome
- Pulmonary cyanosis
- Toxic methemoglobinemia with cyanosis
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to R23.0: its own notes plus those printed at block R20-R23 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.
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.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Change (s) (in) (of) See Also: Removal;
Cyanosis R23.0
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Cyanosis
a bluish or purplish discoloration of the skin and mucous membranes due to an increase in the amount of deoxygenated hemoglobin in the blood or a structural defect in the hemoglobin molecule.
Patient EducationClinical
Skin Conditions
Your skin is your body's largest organ. It covers the entire outside of your body. There are many ways that your skin protects your body and helps keep you healthy. For example, it:
The full article covers:
- What does your skin do?
- What problems and conditions can affect your skin?
- How can I keep my skin healthy?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert R23.0 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About R23.0Overview
What is the ICD-10 code for cyanosis?
The ICD-10-CM code for cyanosis is R23.0 (sometimes written as R230). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is R23.0 (Other skin changes) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report cyanosis on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does R23.0 group to?
When cyanosis is the principal diagnosis on an inpatient stay, it groups to MS-DRG 948, 947, with relative weights from 0.7833 to 1.2608 depending on complications. Higher weights mean higher Medicare reimbursement.
Can R23.0 be a principal diagnosis?
Use it with care. This is a symptom code, so once a definitive diagnosis explaining the cyanosis is established, that condition takes the principal position instead.
Can R23.0 be reported with I73.8?
Not as a rule. The Excludes1 note on R23.0 lists "acrocyanosis (I73.8)". 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).
