R12 is the ICD-10 code for Heartburn. It is a three-character category that is not subdivided further. It belongs to the block R10–R19 (Symptoms and signs involving the digestive system and abdomen) in Chapter XVIII, Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified.
- Code type
- Category (3 characters)
- Chapter
- XVIII · R00–R99
- Classification
- WHO ICD-10, 2019 version
What R12 excludes
Conditions that look similar but belong under another code.
R12 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
R12Halsbrann
DR12Halsbrand
- DR129Halsbrand UNS
R12Närästys
R12Sodbrennen
R12Pyrosis
R12zuurbranden [pyrosis]
R12Heartburn
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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