S90.521D
✓ BillableBlister (nonthermal), right ankle, subsequent encounter
Injury, poisoning and certain other consequences of external causes (S00-T88)
Clinical Description
ICD-10-CM code S90.521D represents blister (nonthermal), right ankle, subsequent encounter. This code falls under the Injury, poisoning and certain other consequences of external causes (S00-T88) classification. It is a billable/specific code valid for HIPAA-covered transactions as of October 1, 2025 (FY2026). This code can be used to indicate a diagnosis for reimbursement purposes on insurance claims.
This is a 8-character code at the 7th level of specificity. This is the most specific code available in this subcategory.
Frequently Asked Questions
What is ICD-10 code S90.521D?
ICD-10-CM code S90.521D is "Blister (nonthermal), right ankle, subsequent encounter". It belongs to the category: Injury, poisoning and certain other consequences of external causes (S00-T88).
Is S90.521D a billable ICD-10 code?
Yes, S90.521D is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
Related Codes in S90.521
Other codes in the same category that may be relevant for differential coding:
🧪 Validate Combinations
Add S90.521D to the Excludes Checker to validate against your full code list.
Open in Checker →Code Information
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)