All ICD10 Codes

S21.05

Non-Billable
ChapterS00–T88
Ranksubcategory
Official Description

Open bite of breast

Use a more specific code (3 billable)
S21.051Open bite of right breastS21.052Open bite of left breastS21.059Open bite of unspecified breast
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88).

Instructional Notes

Includes
  • Bite of breast NOS
Excludes1(Not coded here. Use a different code.)
  • superficial bite of breast (S20.17)
General instructions are available for the parent sections:
View CH19 NotesView S20-S29 NotesView S21 Notes

Clinical Hierarchy

BillableHas subcodes
CH19Injury, poisoning and certain other consequences of external causes (S00-T88)
S20-S29Injuries to the thorax (S20-S29)
S21Open wound of thorax
S21.0Open wound of breast
S21.05Open bite of breastNot billable
S21.051Open bite of right breastBillable
S21.052Open bite of left breastBillable
S21.059Open bite of unspecified breastBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to S21.05:

categoryS21
Open wound of thorax
View context instructions
blockS20-S29
Injuries to the thorax (S20-S29)
View context instructions
chapterCH19
Injury, poisoning and certain other consequences of external causes (S00-T88)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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