2024 ICD-10-CM Diagnosis Code A18.03

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Tuberculosis of other bones

  • A18.03 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2024 edition of ICD-10-CM A18.03 became effective on October 1, 2023.
  • This is the American ICD-10-CM version of A18.03 – other international versions of ICD-10 A18.03 may differ.

Applicable To

  • Tuberculous mastoiditis
  • Tuberculous osteomyelitis

The following code(s) above A18.03 contain annotation back-references

 that may be applicable to A18.03:

  • A00-B99  Certain infectious and parasitic diseases
  • A15-A19  Tuberculosis

Approximate Synonyms

  • Tb (tuberculosis) of bone
  • Tuberculosis (tb) mastoid
  • Tuberculosis of bone
  • Tuberculosis of mastoid process

ICD-10-CM A18.03 is grouped within Diagnostic Related Group(s) (MS-DRG v41.0):

  • 539 Osteomyelitis with mcc
  • 540 Osteomyelitis with cc
  • 541 Osteomyelitis without cc/mcc
  • 974 Hiv with major related condition with mcc
  • 975 Hiv with major related condition with cc
  • 976 Hiv with major related condition without cc/mcc

Convert A18.03 to ICD-9-CMCode 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
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
  • 2024 (effective 10/1/2023): No change

Code annotations containing back-references to A18.03:

Diagnosis Index entries containing back-references to A18.03:

  • Caries
    • mastoid process (chronic) – see Mastoiditis, chronic
      • tuberculous A18.03
    • bone NEC A18.03
    • limb NEC A18.03 (tuberculous)
    • nose A18.03 (tuberculous)
    • orbit A18.03 (tuberculous)
    • tuberculous A18.03
  • Dactylitis
    • tuberculous A18.03
  • Mastoiditis (coalescent) (hemorrhagic) (suppurative) H70.9-
    • in (due to)
      • tuberculosis A18.03
    • tuberculous A18.03
  • Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative) A15.9
    • abscess (respiratory) A15.9
      • bone A18.03
        • specified site NEC A18.03
    • bone A18.03
      • limb NEC A18.03
    • ear (inner) (middle) A18.6
      • bone A18.03
    • shoulder (joint) A18.02
      • blade A18.03
    • sinus (any nasal) A15.8
      • bone A18.03
    • dactylitis A18.03
    • finger A18.03
    • hand A18.03
    • iliac spine A18.03 (superior)
    • jaw A18.03
    • mastoiditis A18.03
    • pelvis A18.03 (bony)
    • skeletal NEC A18.03