2021

  1. ICD-10-CM Codes
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  2. A00-B99 Certain infectious and parasitic diseases
    3. ›
  3. A15-A19 Tuberculosis
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  4. A18- Tuberculosis of other organs
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  5. 2021 ICD-10-CM Diagnosis Code A18.03

2021 ICD-10-CM Diagnosis Code A18.03

Tuberculosis of other bones

    2016 2017 2018 2019 2020 2021 Billable/Specific Code
  • A18.03 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 A18.03 became effective on October 1, 2020.
  • 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
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 A18.03:
  • A00-B99
    2021 ICD-10-CM Range A00-B99

    Certain infectious and parasitic diseases

    Includes
    • diseases generally recognized as communicable or transmissible
    Type 1 Excludes
    • certain localized infections - see body system-related chapters
    Type 2 Excludes
    • carrier or suspected carrier of infectious disease (Z22.-)
    • infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
    • infectious and parasitic diseases specific to the perinatal period (P35-P39)
    • influenza and other acute respiratory infections (J00-J22)
    Use Additional
    • code to identify resistance to antimicrobial drugs (Z16.-)
    Certain infectious and parasitic diseases
  • A15-A19
    2021 ICD-10-CM Range A15-A19

    Tuberculosis

    Includes
    • infections due to Mycobacterium tuberculosis and Mycobacterium bovis
    Type 1 Excludes
    • congenital tuberculosis (P37.0)
    • nonspecific reaction to test for tuberculosis without active tuberculosis (R76.1-)
    • pneumoconiosis associated with tuberculosis, any type in A15 (J65)
    • positive PPD (R76.11)
    • positive tuberculin skin test without active tuberculosis (R76.11)
    • sequelae of tuberculosis (B90.-)
    • silicotuberculosis (J65)
    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 v38.0):
  • 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-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
Code annotations containing back-references to A18.03:
  • Type 1 Excludes: H70.1
    , H75.0
    ICD-10-CM Diagnosis Code H70.1

    Chronic mastoiditis

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Applicable To
    • Caries of mastoid
    • Fistula of mastoid
    Type 1 Excludes
    • tuberculous mastoiditis (A18.03)
    ICD-10-CM Diagnosis Code H75.0

    Mastoiditis in infectious and parasitic diseases classified elsewhere

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 1 Excludes
  • Type 2 Excludes: A18.6
    ICD-10-CM Diagnosis Code A18.6

    Tuberculosis of (inner) (middle) ear

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Tuberculous otitis media
    Type 2 Excludes
    • tuberculosis of external ear (A18.4)
    • tuberculous mastoiditis (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-
    ICD-10-CM Diagnosis Code H70.9-

    Unspecified mastoiditis

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    • 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
    ICD-10-CM Diagnosis Code A15.9

    Respiratory tuberculosis unspecified

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • abscess (respiratory) A15.9
      ICD-10-CM Diagnosis Code A15.9

      Respiratory tuberculosis unspecified

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      • bone A18.03
        • specified site NEC A18.03
    • bone A18.03
      • limb NEC A18.03
    • ear (inner) (middle) A18.6
      ICD-10-CM Diagnosis Code A18.6

      Tuberculosis of (inner) (middle) ear

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Tuberculous otitis media
      Type 2 Excludes
      • tuberculosis of external ear (A18.4)
      • tuberculous mastoiditis (A18.03)
      • bone A18.03
    • shoulder (joint) A18.02
      ICD-10-CM Diagnosis Code A18.02

      Tuberculous arthritis of other joints

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Tuberculosis of hip (joint)
      • Tuberculosis of knee (joint)
      • blade A18.03
    • sinus (any nasal) A15.8
      ICD-10-CM Diagnosis Code A15.8

      Other respiratory tuberculosis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Mediastinal tuberculosis
      • Nasopharyngeal tuberculosis
      • Tuberculosis of nose
      • Tuberculosis of sinus [any nasal]
      • 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

ICD-10-CM Codes Adjacent To A18.03
A17.8 Other tuberculosis of nervous system
A17.81 Tuberculoma of brain and spinal cord
A17.82 Tuberculous meningoencephalitis
A17.83 Tuberculous neuritis
A17.89 Other tuberculosis of nervous system
A17.9 Tuberculosis of nervous system, unspecified
A18 Tuberculosis of other organs
A18.0 Tuberculosis of bones and joints
A18.01 Tuberculosis of spine
A18.02 Tuberculous arthritis of other joints
A18.03 Tuberculosis of other bones
A18.09 Other musculoskeletal tuberculosis
A18.1 Tuberculosis of genitourinary system
A18.10 …… unspecified
A18.11 Tuberculosis of kidney and ureter
A18.12 Tuberculosis of bladder
A18.13 Tuberculosis of other urinary organs
A18.14 Tuberculosis of prostate
A18.15 Tuberculosis of other male genital organs
A18.16 Tuberculosis of cervix
A18.17 Tuberculous female pelvic inflammatory disease

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

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