2024 ICD-10-CM Diagnosis Code T56.2X4D

Toxic effect of chromium and its compounds, undetermined, subsequent encounter

ICD-10-CM Code:
T56.2X4D
ICD-10 Code for:
Toxic effect of chromium and its compounds, undet, subs
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Not chronic
Code Navigator:

Code Classification

  • Injury, poisoning and certain other consequences of external causes
    (S00–T88)
    • Toxic effects of substances chiefly nonmedicinal as to source
      (T51-T65)
      • Toxic effect of metals
        (T56)

T56.2X4D is a billable diagnosis code used to specify a medical diagnosis of toxic effect of chromium and its compounds, undetermined, subsequent encounter. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024. The code is exempt from present on admission (POA) reporting for inpatient admissions to general acute care hospitals.

T56.2X4D is a subsequent encounter code, includes a 7th character and should be used after the patient has completed active treatment for a condition like toxic effect of chromium and its compounds undetermined. According to ICD-10-CM Guidelines a "subsequent encounter" occurs when the patient is receiving routine care for the condition during the healing or recovery phase of treatment. Subsequent diagnosis codes are appropriate during the recovery phase, no matter how many times the patient has seen the provider for this condition. If the provider needs to adjust the patient's care plan due to a setback or other complication, the encounter becomes active again.

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Contact dermatitis due to chromium

Clinical Classification

Clinical Information

  • Adenosine Triphosphate

    an adenine nucleotide containing three phosphate groups esterified to the sugar moiety. in addition to its crucial roles in metabolism adenosine triphosphate is a neurotransmitter.
  • Chromium

    a trace element that plays a role in glucose metabolism. it has the atomic symbol cr, atomic number 24, and atomic weight 52. according to the fourth annual report on carcinogens (ntp85-002,1985), chromium and some of its compounds have been listed as known carcinogens.
  • Chromium Alloys

    specific alloys not less than 85% chromium and nickel or cobalt, with traces of either nickel or cobalt, molybdenum, and other substances. they are used in partial dentures, orthopedic implants, etc.
  • Chromium Compounds

    inorganic compounds that contain chromium as an integral part of the molecule.
  • Chromium Isotopes

    stable chromium atoms that have the same atomic number as the element chromium, but differ in atomic weight. cr-50, 53, and 54 are stable chromium isotopes.
  • Chromium Radioisotopes

    unstable isotopes of chromium that decay or disintegrate emitting radiation. cr atoms with atomic weights of 46-49, 51, 55, and 56 are radioactive chromium isotopes.
  • Edetic Acid

    a chelating agent that sequesters a variety of polyvalent cations such as calcium. it is used in pharmaceutical manufacturing and as a food additive.
  • Oxalic Acid

    a strong dicarboxylic acid occurring in many plants and vegetables. it is produced in the body by metabolism of glyoxylic acid or ascorbic acid. it is not metabolized but excreted in the urine. it is used as an analytical reagent and general reducing agent.

Coding Guidelines

The appropriate 7th character is to be added to each code from block Toxic effect of metals (T56). Use the following options for the aplicable episode of care:

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

Present on Admission (POA)

T56.2X4D is exempt from POA reporting - The Present on Admission (POA) indicator is used for diagnosis codes included in claims involving inpatient admissions to general acute care hospitals. POA indicators must be reported to CMS on each claim to facilitate the grouping of diagnoses codes into the proper Diagnostic Related Groups (DRG). CMS publishes a listing of specific diagnosis codes that are exempt from the POA reporting requirement. Review other POA exempt codes here.

CMS POA Indicator Options and Definitions

POA IndicatorReason for CodeCMS will pay the CC/MCC DRG?
YDiagnosis was present at time of inpatient admission.YES
NDiagnosis was not present at time of inpatient admission.NO
UDocumentation insufficient to determine if the condition was present at the time of inpatient admission.NO
WClinically undetermined - unable to clinically determine whether the condition was present at the time of inpatient admission.YES
1Unreported/Not used - Exempt from POA reporting. NO

Convert T56.2X4D to ICD-9-CM

  • ICD-9-CM Code: V58.89 - Other specfied aftercare
    Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

Table of Drugs and Chemicals

The parent code T56.2X4 of the current diagnosis code is referenced in the Table of Drugs and Chemicals, this table contains a classification of drugs, industrial solvents, corrosive gases, noxious plants, pesticides, and other toxic agents.

According to ICD-10-CM coding guidelines it is advised to do not code directly from the Table of Drugs and Chemicals, instead always refer back to the Tabular List when doing the initial coding. Each substance in the table is assigned a code according to the poisoning classification and external causes of adverse effects. It is important to use as many codes as necessary to specify all reported drugs, medicinal or chemical substances. If the same diagnosis code describes the causative agent for more than one adverse reaction, poisoning, toxic effect or underdosing, utilize the code only once.

Substance Poisoning
Accidental
(unintentional)
Poisoning
Accidental
(self-harm)
Poisoning
Assault
Poisoning
Undetermined
Adverse
effect
Underdosing
ChromateT56.2X1T56.2X2T56.2X3T56.2X4  
Chromate
  »dust or mist
T56.2X1T56.2X2T56.2X3T56.2X4  
Chromate
  »lead [See Also: lead]
T56.2X1T56.2X2T56.2X3T56.2X4  
Chromate
  »lead [See Also: lead]
    »paint
T56.2X1T56.2X2T56.2X3T56.2X4  
ChromicT56.2X1T56.2X2T56.2X3T56.2X4  
Chromic
  »acid
T56.2X1T56.2X2T56.2X3T56.2X4  
Chromic
  »acid
    »dust or mist
T56.2X1T56.2X2T56.2X3T56.2X4  
Chromic
  »phosphate 32P
T56.2X1T56.2X2T56.2X3T56.2X4  
ChromiumT56.2X1T56.2X2T56.2X3T56.2X4  
Chromium
  »compounds
T56.2X1T56.2X2T56.2X3T56.2X4  
Chromium
  »sesquioxide
T56.2X1T56.2X2T56.2X3T56.2X4  
Chromyl chlorideT56.2X1T56.2X2T56.2X3T56.2X4  

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.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.