ICD10BillableValid for clinical use

ICD-10 Code S90.829: Blister (nonthermal), unspecified foot

S90.829 is a billable ICD-10 diagnosis code used to classify Blister (nonthermal), unspecified foot 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 blister (nonthermal), unspecified foot 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
S90-S99Injuries to the ankle and foot
category
S90Superficial injury of ankle, foot and toes
category
S90.8Other superficial injuries of foot
category
S90.82Blister (nonthermal) of foot
currentS90.82

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 Specialist

Coding guidelines

Common synonyms

Blister (nonthermal), unspecified footBlister (nonthermal)BlisterBlister nonthermal, unspecified foot

Frequently asked questions

Code details

CodeS90.829
SystemICD10
Display nameBlister (nonthermal), unspecified foot
ChapterInjury, poisoning and certain other consequences of external causes (S00-T88)
BlockInjuries to the ankle and foot

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 S90.829 for Blister (nonthermal), unspecified foot | HealthAssure