R23.0 is the ICD-10 code for Cyanosis. It is a four-character subcategory of R23 (Other skin changes), the most specific level in the WHO edition. It belongs to the block R20–R23 (Symptoms and signs involving the skin and subcutaneous tissue) in Chapter XVIII, Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified.
- Code type
- Subcategory (4 characters)
- Chapter
- XVIII · R00–R99
- Classification
- WHO ICD-10, 2019 version
What R23.0 excludes
Conditions that look similar but belong under another code.
R23.0 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
R23.0Cyanos
R23.0Cyanose
DR230Cyanose
R23.0Syanoosi
R23.0Zyanose
R23.0Cyanose
R23.0cyanose
R23.0Cyanosis
Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.
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