Is S20.421D a billable code?
Yes. S20.421D is a billable ICD-10-CM code and can be used on claims and superbills for dates of service from October 1, 2026 to September 30, 2027.
ICD-10-CM FY2027 diagnosis code
S20.421D: Blister (nonthermal) of right back wall of thorax, subsequent encounter
Billable codeValid for dates of service October 1, 2026 to September 30, 2027
S20.421D is a billable ICD-10-CM diagnosis code for blister (nonthermal) of right back wall of thorax, subsequent encounter. It is specific enough to use on an insurance claim, a superbill or a Good Faith Estimate.
Superbill GeneratorStart a superbill with S20.421D already added.Good Faith EstimateStart a cost estimate with S20.421D already added.CMS-1500 Claim FormFill a claim form with S20.421D in box 21.
Other codes in S20.421 Blister (nonthermal) of right back wall of thorax
S20.421D questions
What does S20.421D mean?
S20.421D is the ICD-10-CM code for Blister (nonthermal) of right back wall of thorax, subsequent encounter. It is in chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.