ICD-10-CM > S00-T88 > T20-T25 > T20 > T20.4 > T20.44 T20.44 Corrosion of unspecified degree of nose (septum) Non-Billable/Non-Specific Codes T20.44XA..., initial encounterT20.44XD..., subsequent encounterT20.44XS..., sequela