ICD10BillableValid for clinical use

ICD-10 Code S51.859: Open bite of unspecified forearm

S51.859 is a billable ICD-10 diagnosis code used to classify Open bite of unspecified forearm in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Injury, poisoning and certain other consequences of external causes (S00-T88).

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Injury, poisoning and certain other consequences of external causes (S00-T88).

When is it used?

  • May be used when a clinician documents open bite of unspecified forearm in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.

Code hierarchy

chapter
19Injury, poisoning and certain other consequences of external causes (S00-T88)
block
S50-S59Injuries to the elbow and forearm
category
S51Open wound of elbow and forearm
category
S51.8Open wound of forearm
category
S51.85Open bite of forearm
currentS51.85

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Related specialists

Emergency Medicine SpecialistOrthopedic SpecialistENT Specialist

Coding guidelines

Common synonyms

Open bite of unspecified forearmOpen bite of forearm

Frequently asked questions

Code details

CodeS51.859
SystemICD10
Display nameOpen bite of unspecified forearm
ChapterInjury, poisoning and certain other consequences of external causes (S00-T88)
BlockInjuries to the elbow and forearm

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

ICD-10 Code S51.859 for Open bite of unspecified forearm | HealthAssure