ICD-9-CM diagnosis code (retired)
284.81 — Red cell aplasia (acquired)(adult)(with thymoma)
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 284.81
284.81 is an ICD-9-CM diagnosis code for red cell aplasia (acquired)(adult)(with thymoma). 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 4 ICD-10-CM codes, such as D60.0 (Chronic acquired pure red cell aplasia), D60.1 (Transient acquired pure red cell aplasia) and D60.8 (Other acquired pure red cell aplasias). All of these are approximate matches, so review the record to pick the right one.
ICD-10-CM equivalents
Common questions about 284.81
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.