ICD-9-CM diagnosis code (retired)
416.8 — Other chronic pulmonary heart diseases
ICD-9-CM was replaced by ICD-10 on October 1, 2015. These are the ICD-10-CM equivalents from the CMS General Equivalence Mappings.
About ICD-9-CM 416.8
416.8 is an ICD-9-CM diagnosis code for other chronic pulmonary heart diseases. ICD-9-CM was retired for U.S. claims on October 1, 2015, when ICD-10-CM took over.
The CMS General Equivalence Mappings translate it to 7 ICD-10-CM codes, such as I27.20 (Pulmonary hypertension, unspecified), I27.21 (Secondary pulmonary arterial hypertension) and I27.22 (Pulmonary hypertension due to left heart disease). All of these are approximate matches, so review the record to pick the right one.
ICD-10-CM equivalents
- I27.20Pulmonary hypertension, unspecifiedapproximate
- I27.21Secondary pulmonary arterial hypertensionapproximate
- I27.22Pulmonary hypertension due to left heart diseaseapproximate
- I27.23Pulmonary hypertension due to lung diseases and hypoxiaapproximate
- I27.24Chronic thromboembolic pulmonary hypertensionapproximate
- I27.29Other secondary pulmonary hypertensionapproximate
- I27.89Other specified pulmonary heart diseasesapproximate
Common questions about 416.8
GEMs are a translation aid, not a substitute for coding from the record. The 2027 ICD-10 code set has changed since the last GEMs release in 2018. Page updated September 29, 2026.