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S20.342

Non-billable

External constriction of left front wall of thorax

S20.342 is the ICD-10-CM code for External constriction of left front wall of thorax. It is a non-billable category code — use a more specific child code such as S20.342A for billing.

Status
Header (non-billable)
Chapter
S00-T88
Parent
S20.34
Subcodes
3
Edition
FY2026

S00-T88 Injury, poisoning and certain other consequences of external causes

No additional coding notes for this code.

Frequently asked questions

What is ICD-10 code S20.342?
S20.342 is the ICD-10-CM code for "External constriction of left front wall of thorax". It falls under S00-T88 Injury, poisoning and certain other consequences of external causes.
Is S20.342 a billable code?
No — S20.342 is a non-billable header code. Use a more specific child code (such as S20.342A) for billing.
What are the subcodes of S20.342?
S20.342 has 3 more specific child codes, including S20.342A, S20.342D, S20.342S.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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