T25.63 ICD-10-CM Code: Corrosion of second degree of toe(s) (nail)
Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.
Official Registry Overview & Definition
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for T25.63 in the official ICD-10-CM tabular list.
Includes
Conditions the official ICD-10-CM tabular list includes under this code.
- burns and corrosions of first degree [erythema]
- burns and corrosions of second degree [blisters][epidermal loss]
- burns and corrosions of third degree [deep necrosis of underlying tissue] [full- thickness skin loss]
Code First
Underlying conditions that must be sequenced before this code.
Change history
No changes recorded for this code — unchanged since the FY2016 baseline of the change ledger.
Verify Before Coding
- Not billable as written — a more specific code is required: T25.631A, T25.631D, T25.631S, T25.632A, T25.632D.
- Requires a 7th character. "The appropriate 7th character is to be added to each code from category T25" Options: T25.631A, T25.631D, T25.631S, T25.632A, T25.632D, T25.632S
From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim.
Contextual Map
Every relationship of T25.63 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.
Hierarchy
- S00-T88 — Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) (S00-T88) [Hierarchy]
Referenced by Excludes2 notes
- T24 — Burn and corrosion of lower limb, except ankle and foot [Excludes2](via T25.-): “burn and corrosion of ankle and foot (T25.-)” · check together
- T25.62 — Corrosion of second degree of foot [Excludes2]: “corrosion of second degree of toe(s) (nail) (T25.63-)” · check together
Nearest codes (40)
- T25 — Burn and corrosion of ankle and foot [Sibling]
- T25.612A — Corrosion of second degree of left ankle, initial encounter [Sibling]
- T25.612D — Corrosion of second degree of left ankle, subsequent encounter [Sibling]
- T25.612S — Corrosion of second degree of left ankle, sequela [Sibling]
- T25.619 — Corrosion of second degree of unspecified ankle [Sibling]
- T25.619A — Corrosion of second degree of unspecified ankle, initial encounter [Sibling]
- T25.619D — Corrosion of second degree of unspecified ankle, subsequent encounter [Sibling]
- T25.619S — Corrosion of second degree of unspecified ankle, sequela [Sibling]
- and 32 more
Referenced by Other Codes
Official ICD-10-CM tabular notes on other codes that name T25.63 or its code family.
Frequently Asked Questions (FAQ) & Clinical Guidance
Can T25.63 be billed directly?
No. T25.63 (Corrosion of second degree of toe(s) (nail)) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.
Does T25.63 require a 7th character?
Yes. The appropriate 7th character is to be added to each code from category T25.
Nearest Codes in This Family
Official ICD-10-CM classifications closest to T25.63 in its code family, with their registry titles.
- T25.622S — Corrosion of second degree of left foot, sequela
- T25.629 — Corrosion of second degree of unspecified foot
- T25.629A — Corrosion of second degree of unspecified foot, initial encounter
- T25.629D — Corrosion of second degree of unspecified foot, subsequent encounter
- T25.629S — Corrosion of second degree of unspecified foot, sequela
- T25.631 — Corrosion of second degree of right toe(s) (nail)
- T25.631A — Corrosion of second degree of right toe(s) (nail), initial encounter
- T25.631D — Corrosion of second degree of right toe(s) (nail), subsequent encounter
- T25.631S — Corrosion of second degree of right toe(s) (nail), sequela
- T25.632 — Corrosion of second degree of left toe(s) (nail)