ICD-9-CM diagnosis code (retired)
983.9 — Toxic effect of caustic, unspecified
About ICD-9-CM 983.9
983.9 is an ICD-9-CM diagnosis code for toxic effect of caustic, unspecified. 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 12 ICD-10-CM codes, such as T54.1X1A (Toxic effect of other corrosive organic compounds, accidental (unintentional), initial encounter), T54.1X2A (Toxic effect of other corrosive organic compounds, intentional self-harm, initial encounter) and T54.1X3A (Toxic effect of other corrosive organic compounds, assault, initial encounter). All of these are approximate matches, so review the record to pick the right one.
ICD-10-CM equivalents
- T54.1X1AToxic effect of other corrosive organic compounds, accidental (unintentional), initial encounterapproximate
- T54.1X2AToxic effect of other corrosive organic compounds, intentional self-harm, initial encounterapproximate
- T54.1X3AToxic effect of other corrosive organic compounds, assault, initial encounterapproximate
- T54.1X4AToxic effect of other corrosive organic compounds, undetermined, initial encounterapproximate
- T54.91XAToxic effect of unspecified corrosive substance, accidental (unintentional), initial encounterapproximate
- T54.92XAToxic effect of unspecified corrosive substance, intentional self-harm, initial encounterapproximate
- T54.93XAToxic effect of unspecified corrosive substance, assault, initial encounterapproximate
- T54.94XAToxic effect of unspecified corrosive substance, undetermined, initial encounterapproximate
- T57.1X1AToxic effect of phosphorus and its compounds, accidental (unintentional), initial encounterapproximate
- T57.1X2AToxic effect of phosphorus and its compounds, intentional self-harm, initial encounterapproximate
- T57.1X3AToxic effect of phosphorus and its compounds, assault, initial encounterapproximate
- T57.1X4AToxic effect of phosphorus and its compounds, undetermined, initial encounterapproximate
Common questions about 983.9
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.