2021 ICD-10-CM Diagnosis Code M1A.1621

Lead-induced chronic gout, left knee, with tophus (tophi)

    2016 2017 2018 2019 2020 2021 Billable/Specific Code
  • M1A.1621 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2021 edition of ICD-10-CM M1A.1621 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of M1A.1621 - other international versions of ICD-10 M1A.1621 may differ.
The following code(s) above M1A.1621 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to M1A.1621:
  • M00-M99
    2021 ICD-10-CM Range M00-M99

    Diseases of the musculoskeletal system and connective tissue

    • Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
    Type 2 Excludes
    • arthropathic psoriasis (L40.5-)
    • certain conditions originating in the perinatal period (P04-P96)
    • certain infectious and parasitic diseases (A00-B99)
    • compartment syndrome (traumatic) (T79.A-)
    • complications of pregnancy, childbirth and the puerperium (O00-O9A)
    • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
    • endocrine, nutritional and metabolic diseases (E00-E88)
    • injury, poisoning and certain other consequences of external causes (S00-T88)
    • neoplasms (C00-D49)
    • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
    Diseases of the musculoskeletal system and connective tissue
  • M1A
    ICD-10-CM Diagnosis Code M1A

    Chronic gout

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 1 Excludes
    Type 2 Excludes
    Use Additional
    • code to identify:
    • Autonomic neuropathy in diseases classified elsewhere (G99.0)
    • Calculus of urinary tract in diseases classified elsewhere (N22)
    • Cardiomyopathy in diseases classified elsewhere (I43)
    • Disorders of external ear in diseases classified elsewhere (H61.1-, H62.8-)
    • Disorders of iris and ciliary body in diseases classified elsewhere (H22)
    • Glomerular disorders in diseases classified elsewhere (N08)
    Chronic gout
  • M1A.1
    ICD-10-CM Diagnosis Code M1A.1

    Lead-induced chronic gout

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Code First
    • toxic effects of lead and its compounds (T56.0-)
    Lead-induced chronic gout
Approximate Synonyms
  • Chronic lead induced gout of left knee
  • Lead induced chronic tophaceous gout of left knee
ICD-10-CM M1A.1621 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):
  • 917 Poisoning and toxic effects of drugs with mcc
  • 918 Poisoning and toxic effects of drugs without mcc

Convert M1A.1621 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
ICD-10-CM Codes Adjacent To M1A.1621
M1A.1521 …… with tophus (tophi)
M1A.159 Lead-induced chronic gout, unspecified hip
M1A.1590 …… without tophus (tophi)
M1A.1591 …… with tophus (tophi)
M1A.16 Lead-induced chronic gout, knee
M1A.161 Lead-induced chronic gout, right knee
M1A.1610 …… without tophus (tophi)
M1A.1611 …… with tophus (tophi)
M1A.162 Lead-induced chronic gout, left knee
M1A.1620 …… without tophus (tophi)
M1A.1621 …… with tophus (tophi)
M1A.169 Lead-induced chronic gout, unspecified knee
M1A.1690 …… without tophus (tophi)
M1A.1691 …… with tophus (tophi)
M1A.17 Lead-induced chronic gout, ankle and foot
M1A.171 Lead-induced chronic gout, right ankle and foot
M1A.1710 …… without tophus (tophi)
M1A.1711 …… with tophus (tophi)
M1A.172 Lead-induced chronic gout, left ankle and foot
M1A.1720 …… without tophus (tophi)
M1A.1721 …… with tophus (tophi)

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.