S90
Non-Billable

Superficial injury of ankle, foot and toes

Non-Billable / Non-Specific Code

What is Superficial injury of ankle, foot and toes?

ICD-10-CM S90 is the diagnosis code for Superficial injury of ankle, foot and toes. This code falls under the section "Injuries to the ankle and foot" within Chapter 19 — Injury, poisoning and certain other consequences of external causes (S00-T88). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.

Coding Guidelines for S90

Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.

ICD-10-CM Code Hierarchy

Understanding where S90 sits in the ICD-10-CM classification helps ensure proper coding:

Sub-Codes 8 entries
S90.0Contusion of ankleNon-BillableS90.00Contusion of unspecified ankleBillableS90.01Contusion of right ankleBillableS90.02Contusion of left ankleBillableS90.1Contusion of toe without damage to nailNon-BillableS90.11Contusion of great toe without damage to nailNon-BillableS90.111Contusion of right great toe without damage to nailBillableS90.112Contusion of left great toe without damage to nailBillableS90.119Contusion of unspecified great toe without damage to nailBillableS90.12Contusion of lesser toe without damage to nailNon-BillableS90.121Contusion of right lesser toe(s) without damage to nailBillableS90.122Contusion of left lesser toe(s) without damage to nailBillableS90.129Contusion of unspecified lesser toe(s) without damage to nailBillableS90.2Contusion of toe with damage to nailNon-BillableS90.21Contusion of great toe with damage to nailNon-BillableS90.211Contusion of right great toe with damage to nailBillableS90.212Contusion of left great toe with damage to nailBillableS90.219Contusion of unspecified great toe with damage to nailBillableS90.22Contusion of lesser toe with damage to nailNon-BillableS90.221Contusion of right lesser toe(s) with damage to nailBillableS90.222Contusion of left lesser toe(s) with damage to nailBillableS90.229Contusion of unspecified lesser toe(s) with damage to nailBillableS90.3Contusion of footNon-BillableS90.30Contusion of unspecified footBillableS90.31Contusion of right footBillableS90.32Contusion of left footBillableS90.4Other superficial injuries of toeNon-BillableS90.41Abrasion of toeNon-BillableS90.411Abrasion, right great toeBillableS90.412Abrasion, left great toeBillableS90.413Abrasion, unspecified great toeBillableS90.414Abrasion, right lesser toe(s)BillableS90.415Abrasion, left lesser toe(s)BillableS90.416Abrasion, unspecified lesser toe(s)BillableS90.42Blister (nonthermal) of toeNon-BillableS90.421Blister (nonthermal), right great toeBillableS90.422Blister (nonthermal), left great toeBillableS90.423Blister (nonthermal), unspecified great toeBillableS90.424Blister (nonthermal), right lesser toe(s)BillableS90.425Blister (nonthermal), left lesser toe(s)BillableS90.426Blister (nonthermal), unspecified lesser toe(s)BillableS90.44External constriction of toeNon-BillableS90.441External constriction, right great toeBillableS90.442External constriction, left great toeBillableS90.443External constriction, unspecified great toeBillableS90.444External constriction, right lesser toe(s)BillableS90.445External constriction, left lesser toe(s)BillableS90.446External constriction, unspecified lesser toe(s)BillableS90.45Superficial foreign body of toeNon-BillableS90.451Superficial foreign body, right great toeBillableS90.452Superficial foreign body, left great toeBillableS90.453Superficial foreign body, unspecified great toeBillableS90.454Superficial foreign body, right lesser toe(s)BillableS90.455Superficial foreign body, left lesser toe(s)BillableS90.456Superficial foreign body, unspecified lesser toe(s)BillableS90.46Insect bite (nonvenomous) of toeNon-BillableS90.461Insect bite (nonvenomous), right great toeBillableS90.462Insect bite (nonvenomous), left great toeBillableS90.463Insect bite (nonvenomous), unspecified great toeBillableS90.464Insect bite (nonvenomous), right lesser toe(s)BillableS90.465Insect bite (nonvenomous), left lesser toe(s)BillableS90.466Insect bite (nonvenomous), unspecified lesser toe(s)BillableS90.47Other superficial bite of toeNon-BillableS90.471Other superficial bite of right great toeBillableS90.472Other superficial bite of left great toeBillableS90.473Other superficial bite of unspecified great toeBillableS90.474Other superficial bite of right lesser toe(s)BillableS90.475Other superficial bite of left lesser toe(s)BillableS90.476Other superficial bite of unspecified lesser toe(s)BillableS90.5Other superficial injuries of ankleNon-BillableS90.51Abrasion of ankleNon-BillableS90.511Abrasion, right ankleBillableS90.512Abrasion, left ankleBillableS90.519Abrasion, unspecified ankleBillableS90.52Blister (nonthermal) of ankleNon-BillableS90.521Blister (nonthermal), right ankleBillableS90.522Blister (nonthermal), left ankleBillableS90.529Blister (nonthermal), unspecified ankleBillableS90.54External constriction of ankleNon-BillableS90.541External constriction, right ankleBillableS90.542External constriction, left ankleBillableS90.549External constriction, unspecified ankleBillableS90.55Superficial foreign body of ankleNon-BillableS90.551Superficial foreign body, right ankleBillableS90.552Superficial foreign body, left ankleBillableS90.559Superficial foreign body, unspecified ankleBillableS90.56Insect bite (nonvenomous) of ankleNon-BillableS90.561Insect bite (nonvenomous), right ankleBillableS90.562Insect bite (nonvenomous), left ankleBillableS90.569Insect bite (nonvenomous), unspecified ankleBillableS90.57Other superficial bite of ankleNon-BillableS90.571Other superficial bite of ankle, right ankleBillableS90.572Other superficial bite of ankle, left ankleBillableS90.579Other superficial bite of ankle, unspecified ankleBillableS90.8Other superficial injuries of footNon-BillableS90.81Abrasion of footNon-BillableS90.811Abrasion, right footBillableS90.812Abrasion, left footBillableS90.819Abrasion, unspecified footBillableS90.82Blister (nonthermal) of footNon-BillableS90.821Blister (nonthermal), right footBillableS90.822Blister (nonthermal), left footBillableS90.829Blister (nonthermal), unspecified footBillableS90.84External constriction of footNon-BillableS90.841External constriction, right footBillableS90.842External constriction, left footBillableS90.849External constriction, unspecified footBillableS90.85Superficial foreign body of footNon-BillableS90.851Superficial foreign body, right footBillableS90.852Superficial foreign body, left footBillableS90.859Superficial foreign body, unspecified footBillableS90.86Insect bite (nonvenomous) of footNon-BillableS90.861Insect bite (nonvenomous), right footBillableS90.862Insect bite (nonvenomous), left footBillableS90.869Insect bite (nonvenomous), unspecified footBillableS90.87Other superficial bite of footNon-BillableS90.871Other superficial bite of right footBillableS90.872Other superficial bite of left footBillableS90.879Other superficial bite of unspecified footBillableS90.9Unspecified superficial injury of ankle, foot and toeNon-BillableS90.91Unspecified superficial injury of ankleNon-BillableS90.911Unspecified superficial injury of right ankleBillableS90.912Unspecified superficial injury of left ankleBillableS90.919Unspecified superficial injury of unspecified ankleBillableS90.92Unspecified superficial injury of footNon-BillableS90.921Unspecified superficial injury of right footBillableS90.922Unspecified superficial injury of left footBillableS90.929Unspecified superficial injury of unspecified footBillableS90.93Unspecified superficial injury of toesNon-BillableS90.931Unspecified superficial injury of right great toeBillableS90.932Unspecified superficial injury of left great toeBillableS90.933Unspecified superficial injury of unspecified great toeBillableS90.934Unspecified superficial injury of right lesser toe(s)BillableS90.935Unspecified superficial injury of left lesser toe(s)BillableS90.936Unspecified superficial injury of unspecified lesser toe(s)Billable
Related Codes

Frequently Asked Questions

Is S90 a billable ICD-10-CM code?

No, S90 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.

What does S90 mean?

S90 is the ICD-10-CM diagnosis code for "Superficial injury of ankle, foot and toes". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.

What section is S90 in?

S90 is located in Section S90-S99 — "Injuries to the ankle and foot" within Chapter 19 of the ICD-10-CM Tabular List.

What are the sub-codes of S90?

S90 has 8 sub-code(s) that provide more specific detail: S90.0, S90.1, S90.2, S90.3, S90.4 and more.

When should I use S90?

Use S90 when the patients documented diagnosis matches "Superficial injury of ankle, foot and toes" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.

People Also Ask

What is the ICD-10 code for Superficial injury of ankle, foot and toes?

The ICD-10-CM code for Superficial injury of ankle, foot and toes is S90.

Can S90 be used for primary diagnosis?

No, S90 is non-billable. Use a more specific sub-code for primary diagnosis billing.

What chapter is S90 in?

S90 is in Chapter 19 of the ICD-10-CM Tabular List.

Is S90 valid for 2026?

Yes, S90 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.

See Also

← PreviousS89.92Unspecified injury of left lower legNext →S90.0Contusion of ankle
Code Details
S90
Superficial injury of ankle, foot and toes
Non-Billable / Non-Specific Code
19 — Injury, poisoning and certain other consequences of external causes (S00-T88)
S90-S99 — Injuries to the ankle and foot
2026 ICD-10-CM