Convert to ICD-10-CM: 
944.04 converts approximately to:
- 2015/16 ICD-10-CM T23.049A Burn of unspecified degree of unspecified multiple fingers (nail), including thumb, initial encounterOr: 
- 2015/16 ICD-10-CM T23.449A Corrosion of unspecified degree of unspecified multiple fingers (nail), including thumb, initial encounter