A18.03 Tuberculosis of other bones

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applicable to

• Tuberculous mastoiditis
• Tuberculous osteomyelitis

MS-DRG index

Defines the logic of DRG(s) 539-541 in MDC 08.

Approximate ICD-9-CM (GEMs)

• 015.60 Tuberculosis of mastoid, unspecified (approximate)
• 015.70 Tuberculosis of other specified bone, unspecified (approximate)
• 015.70 Tuberculosis of other specified bone, unspecified (approximate)
• 730.88 Other infections involving bone in diseases classified elsewhere, other specified sites (approximate)

Code annotations containing back-references to A18.03

Back-references to A18.03

• Type 2 Excludes: A18.6 Tuberculosis of (inner) (middle) ear ("tuberculous mastoiditis (A18.03)")
• Type 1 Excludes: H70.1 Chronic mastoiditis ("tuberculous mastoiditis (A18.03)")
• Type 1 Excludes: H75.0 Mastoiditis in infectious and parasitic diseases classified elsewhere ("tuberculosis (A18.03)")

Back-references to A18

• Type 2 Excludes: A31 Infection due to other mycobacteria ("tuberculosis (A15-A19)")

Diagnosis Index entries for A18.03

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

Nearby codes

• 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 (this code)
• A18.09 Other musculoskeletal tuberculosis
• A18.1 Tuberculosis of genitourinary system
• A18.10 Tuberculosis of genitourinary system, unspecified
• A18.11 Tuberculosis of kidney and ureter
• A18.12 Tuberculosis of bladder