T23.5
Non-Billable

Corrosion of first degree of wrist and hand

Non-Billable / Non-Specific Code

What is Corrosion of first degree of wrist and hand?

ICD-10-CM T23.5 is the diagnosis code for Corrosion of first degree of wrist and hand. This code falls under the section "Burns and corrosions of external body surface, specified by site" 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 T23.5

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 T23.5 sits in the ICD-10-CM classification helps ensure proper coding:

Sub-Codes 9 entries
T23.50Corrosion of first degree of hand, unspecified siteNon-BillableT23.501Corrosion of first degree of right hand, unspecified siteBillableT23.502Corrosion of first degree of left hand, unspecified siteBillableT23.509Corrosion of first degree of unspecified hand, unspecified siteBillableT23.51Corrosion of first degree of thumb (nail)Non-BillableT23.511Corrosion of first degree of right thumb (nail)BillableT23.512Corrosion of first degree of left thumb (nail)BillableT23.519Corrosion of first degree of unspecified thumb (nail)BillableT23.52Corrosion of first degree of single finger (nail) except thumbNon-BillableT23.521Corrosion of first degree of single right finger (nail) except thumbBillableT23.522Corrosion of first degree of single left finger (nail) except thumbBillableT23.529Corrosion of first degree of unspecified single finger (nail) except thumbBillableT23.53Corrosion of first degree of multiple fingers (nail), not including thumbNon-BillableT23.531Corrosion of first degree of multiple right fingers (nail), not including thumbBillableT23.532Corrosion of first degree of multiple left fingers (nail), not including thumbBillableT23.539Corrosion of first degree of unspecified multiple fingers (nail), not including thumbBillableT23.54Corrosion of first degree of multiple fingers (nail), including thumbNon-BillableT23.541Corrosion of first degree of multiple right fingers (nail), including thumbBillableT23.542Corrosion of first degree of multiple left fingers (nail), including thumbBillableT23.549Corrosion of first degree of unspecified multiple fingers (nail), including thumbBillableT23.55Corrosion of first degree of palmNon-BillableT23.551Corrosion of first degree of right palmBillableT23.552Corrosion of first degree of left palmBillableT23.559Corrosion of first degree of unspecified palmBillableT23.56Corrosion of first degree of back of handNon-BillableT23.561Corrosion of first degree of back of right handBillableT23.562Corrosion of first degree of back of left handBillableT23.569Corrosion of first degree of back of unspecified handBillableT23.57Corrosion of first degree of wristNon-BillableT23.571Corrosion of first degree of right wristBillableT23.572Corrosion of first degree of left wristBillableT23.579Corrosion of first degree of unspecified wristBillableT23.59Corrosion of first degree of multiple sites of wrist and handNon-BillableT23.591Corrosion of first degree of multiple sites of right wrist and handBillableT23.592Corrosion of first degree of multiple sites of left wrist and handBillableT23.599Corrosion of first degree of multiple sites of unspecified wrist and handBillable
Related Codes

Frequently Asked Questions

Is T23.5 a billable ICD-10-CM code?

No, T23.5 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.

What does T23.5 mean?

T23.5 is the ICD-10-CM diagnosis code for "Corrosion of first degree of wrist and hand". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.

What is the parent code of T23.5?

The parent code of T23.5 is T23 ("Burn and corrosion of wrist and hand"). T23.5 provides a more specific classification within this category.

What section is T23.5 in?

T23.5 is located in Section T20-T25 — "Burns and corrosions of external body surface, specified by site" within Chapter 19 of the ICD-10-CM Tabular List.

What are the sub-codes of T23.5?

T23.5 has 9 sub-code(s) that provide more specific detail: T23.50, T23.51, T23.52, T23.53, T23.54 and more.

When should I use T23.5?

Use T23.5 when the patients documented diagnosis matches "Corrosion of first degree of wrist and hand" 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 Corrosion of first degree of wrist and hand?

The ICD-10-CM code for Corrosion of first degree of wrist and hand is T23.5.

Can T23.5 be used for primary diagnosis?

No, T23.5 is non-billable. Use a more specific sub-code for primary diagnosis billing.

What chapter is T23.5 in?

T23.5 is in Chapter 19 of the ICD-10-CM Tabular List.

Is T23.5 valid for 2026?

Yes, T23.5 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.

See Also

← PreviousT23.499Corrosion of unspecified degree of multiple sites of unspecified wrist and handNext →T23.50Corrosion of first degree of hand, unspecified site
Code Details
T23.5
Corrosion of first degree of wrist and hand
Non-Billable / Non-Specific Code
19 — Injury, poisoning and certain other consequences of external causes (S00-T88)
T20-T25 — Burns and corrosions of external body surface, specified by site
2026 ICD-10-CM