Version 2024

2024 ICD-10-CM Diagnosis Code T25.6

Corrosion of second degree of ankle and foot

ICD-10-CM Code:
T25.6
ICD-10 Code for:
Corrosion of second degree of ankle and foot
Is Billable?
Not Valid for Submission
Code Navigator:

Code Classification

  • Injury, poisoning and certain other consequences of external causes
    (S00–T88)
    • Burns and corrosions of external body surface, specified by site
      (T20-T25)
      • Burn and corrosion of ankle and foot
        (T25)

T25.6 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of corrosion of second degree of ankle and foot. The code is not specific and is NOT valid for the year 2024 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding Applicable to Corrosion of second degree of ankle and foot

Non-specific codes like T25.6 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for corrosion of second degree of ankle and foot:

  • T25.61 for Corrosion of second degree of ankle - NON-BILLABLE CODE

  • T25.611 for Corrosion of second degree of right ankle - NON-BILLABLE CODE

  • Use T25.611A for initial encounter - BILLABLE CODE

  • Use T25.611D for subsequent encounter - BILLABLE CODE

  • Use T25.611S for sequela - BILLABLE CODE

  • T25.612 for Corrosion of second degree of left ankle - NON-BILLABLE CODE

  • Use T25.612A for initial encounter - BILLABLE CODE

  • Use T25.612D for subsequent encounter - BILLABLE CODE

  • Use T25.612S for sequela - BILLABLE CODE

  • T25.619 for Corrosion of second degree of unspecified ankle - NON-BILLABLE CODE

  • Use T25.619A for initial encounter - BILLABLE CODE

  • Use T25.619D for subsequent encounter - BILLABLE CODE

  • Use T25.619S for sequela - BILLABLE CODE

  • T25.62 for Corrosion of second degree of foot - NON-BILLABLE CODE

  • T25.621 for Corrosion of second degree of right foot - NON-BILLABLE CODE

  • Use T25.621A for initial encounter - BILLABLE CODE

  • Use T25.621D for subsequent encounter - BILLABLE CODE

  • Use T25.621S for sequela - BILLABLE CODE

  • T25.622 for Corrosion of second degree of left foot - NON-BILLABLE CODE

  • Use T25.622A for initial encounter - BILLABLE CODE

  • Use T25.622D for subsequent encounter - BILLABLE CODE

  • Use T25.622S for sequela - BILLABLE CODE

  • T25.629 for Corrosion of second degree of unspecified foot - NON-BILLABLE CODE

  • Use T25.629A for initial encounter - BILLABLE CODE

  • Use T25.629D for subsequent encounter - BILLABLE CODE

  • Use T25.629S for sequela - BILLABLE CODE

  • T25.63 for Corrosion of second degree of toe(s) (nail) - NON-BILLABLE CODE

  • T25.631 for Corrosion of second degree of right toe(s) (nail) - NON-BILLABLE CODE

  • Use T25.631A for initial encounter - BILLABLE CODE

  • Use T25.631D for subsequent encounter - BILLABLE CODE

  • Use T25.631S for sequela - BILLABLE CODE

  • T25.632 for Corrosion of second degree of left toe(s) (nail) - NON-BILLABLE CODE

  • Use T25.632A for initial encounter - BILLABLE CODE

  • Use T25.632D for subsequent encounter - BILLABLE CODE

  • Use T25.632S for sequela - BILLABLE CODE

  • T25.639 for Corrosion of second degree of unspecified toe(s) (nail) - NON-BILLABLE CODE

  • Use T25.639A for initial encounter - BILLABLE CODE

  • Use T25.639D for subsequent encounter - BILLABLE CODE

  • Use T25.639S for sequela - BILLABLE CODE

  • T25.69 for Corrosion of second degree of multiple sites of ankle and foot - NON-BILLABLE CODE

  • T25.691 for Corrosion of second degree of right ankle and foot - NON-BILLABLE CODE

  • Use T25.691A for initial encounter - BILLABLE CODE

  • Use T25.691D for subsequent encounter - BILLABLE CODE

  • Use T25.691S for sequela - BILLABLE CODE

  • T25.692 for Corrosion of second degree of left ankle and foot - NON-BILLABLE CODE

  • Use T25.692A for initial encounter - BILLABLE CODE

  • Use T25.692D for subsequent encounter - BILLABLE CODE

  • Use T25.692S for sequela - BILLABLE CODE

  • T25.699 for Corrosion of second degree of unspecified ankle and foot - NON-BILLABLE CODE

  • Use T25.699A for initial encounter - BILLABLE CODE

  • Use T25.699D for subsequent encounter - BILLABLE CODE

  • Use T25.699S for sequela - BILLABLE CODE

Coding Guidelines

The ICD-10-CM makes a distinction between burns and corrosions. The burn codes are for thermal burns, except sunburns, that come from a heat source, such as a fire or hot appliance. The burn codes are also for burns resulting from electricity and radiation. Corrosions are burns due to chemicals. The guidelines are the same for burns and corrosions.

Sequence first the code that reflects the highest degree of burn when more than one burn is present.

  • When the reason for the admission or encounter is for treatment of external multiple burns, sequence first the code that reflects the burn of the highest degree.
  • When a patient has both internal and external burns, the circumstances of admission govern the selection of the principal diagnosis or first-listed diagnosis.
  • When a patient is admitted for burn injuries and other related conditions such as smoke inhalation and/or respiratory failure, the circumstances of admission govern the selection of the principal or first-listed diagnosis.

Current burns (T20-T25) are classified by depth, extent and by agent (X code). Burns are classified by depth as first degree (erythema), second degree (blistering), and third degree (full-thickness involvement).

Classify burns of the same local site (three-character category level, T20-T28) but of different degrees to the subcategory identifying the highest degree recorded in the diagnosis.

The appropriate 7th character is to be added to each code from block Burn and corrosion of ankle and foot (T25). Use the following options for the aplicable episode of care:

  • A - initial encounter
  • D - subsequent encounter
  • S - sequela

Patient Education


Burns

A burn is damage to your body's tissues caused by heat, chemicals, electricity, sunlight, or radiation. Scalds from hot liquids and steam, building fires and flammable liquids and gases are the most common causes of burns. Another kind is an inhalation injury, caused by breathing smoke.

There are three types of burns:

  • First-degree burns damage only the outer layer of skin
  • Second-degree burns damage the outer layer and the layer underneath
  • Third-degree burns damage or destroy the deepest layer of skin and tissues underneath

Burns can cause swelling, blistering, scarring and, in serious cases, shock, and even death. They also can lead to infections because they damage your skin's protective barrier. Treatment for burns depends on the cause of the burn, how deep it is, and how much of the body it covers. Antibiotic creams can prevent or treat infections. For more serious burns, treatment may be needed to clean the wound, replace the skin, and make sure the patient has enough fluids and nutrition.

NIH: National Institute of General Medical Sciences


[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.