S00.522 Blister (nonthermal) of oral cavity

The ICD-10-CM code for Blister (nonthermal) of oral cavity is S00.522 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

19: Injury, poisoning and certain other consequences of external causes (S00-T88)

Section

S00-S09: Injuries to the head (S00-S09)

Category S00

128 codes (96 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to S00.522:

• Blister (nonthermal) › oral cavity
• Blister (nonthermal) › tongue
• Blister (nonthermal) › uvula
• Blister (nonthermal) › gum
• Blister (nonthermal) › alveolar process
• Blister (nonthermal) › mouth
• Blister (nonthermal) › palate
• Blister (nonthermal) › cheek › internal

Official Coding Guidelines

Sequence blood vessel/nerve injury first (fragment)

injury is to the blood vessels or nerves, that injury should be sequenced first.

Do not assign injury codes for iatrogenic injuries; code complication

3) Iatrogenic injuries Injury codes from Chapter 19 should not be assigned for injuries that occur during, or as a result of, a medical intervention. Assign the appropriate complication code(s).

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool

Cite This Page

Reference S00.522 with the canonical source and edition:

S00.522 — Blister (nonthermal) of oral cavity. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/S00.522

Canonical URL: https://icd10codingpro.com/codes/S00.522