DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

A17 Tuberculosis of nervous system

  • Header · not billable

A17 is not billable. The category heads 7 billable codes in FY2027, grouped under 4 subdivisions.

Index → code

  • Tuberculomabrain → A17.81
  • Tuberculomaspinal cord → A17.81
  • Tuberclebrain, solitary → A17.81

Where it sits

  1. Chapter 1 Certain infectious and parasitic diseases (A00-B99)
  2. A15-A19 Tuberculosis (A15-A19)
  3. A17 Tuberculosis of nervous system
Billable codes
7
Subdivisions
4
CC / MCC codes
1 / 6
HCC V28 codes
0
New FY2027
0
Index entries
44

Codes in A17

  1. A17.0
    Tuberculous meningitis
    BillableMCC
    Inclusion terms 2, Excludes1 1

    Inclusion terms

    • Tuberculosis of meninges (cerebral)(spinal)
    • Tuberculous leptomeningitis

    Excludes1

    • tuberculous meningoencephalitis (A17.82) A17.82
  2. A17.1
    Meningeal tuberculoma
    BillableMCC
    Inclusion terms 1, Excludes2 1

    Inclusion terms

    • Tuberculoma of meninges (cerebral) (spinal)

    Excludes2

    • tuberculoma of brain and spinal cord (A17.81) A17.81
  3. A17.8
    Other tuberculosis of nervous system
    Header
  4. A17.81
    Tuberculoma of brain and spinal cord
    BillableMCC
    Inclusion terms 1

    Inclusion terms

    • Tuberculous abscess of brain and spinal cord
  5. A17.82
    Tuberculous meningoencephalitis
    BillableMCC
    Inclusion terms 1

    Inclusion terms

    • Tuberculous myelitis
  6. A17.83
    Tuberculous neuritis
    BillableMCC
    Inclusion terms 1

    Inclusion terms

    • Tuberculous mononeuropathy
  7. A17.89
    Other tuberculosis of nervous system
    BillableMCC
    Inclusion terms 1

    Inclusion terms

    • Tuberculous polyneuropathy
  8. A17.9
    Tuberculosis of nervous system, unspecified
    BillableCC

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

Notes that also apply

Block A15-A19 instructions (Includes 1, Excludes1 7, Use additional code 1): printed on the block page.

Chapter 1 instructions (Includes 1, Excludes2 5, Use additional code 1): printed on the chapter 1 page.

Index entries

  • Meningitis (basal) (basic) (brain) (cerebral) (cervical) (congestive) (diffuse) (hemorrhagic) (infantile) (membranous) (metastatic) (nonspecific) (pontine) (progressive) (simple) (spinal) (subacute) (sympathetic) (toxic)caseous (tuberculous) → A17.0
  • Meningitis (basal) (basic) (brain) (cerebral) (cervical) (congestive) (diffuse) (hemorrhagic) (infantile) (membranous) (metastatic) (nonspecific) (pontine) (progressive) (simple) (spinal) (subacute) (sympathetic) (toxic)tuberculous → A17.0
  • Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative)arachnoid → A17.0
  • Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative)dura (mater) (cerebral) (spinal) → A17.0
  • Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative)leptomeninges, leptomeningitis (cerebral) (spinal) → A17.0
  • Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative)meninges, meningitis (basilar) (cerebral) (cerebrospinal) (spinal) → A17.0
  • Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative)pachymeningitis → A17.0
  • Tuberculomameninges (cerebral) (spinal) → A17.1
  • Tuberclebrain, solitary → A17.81
  • Tuberculomabrain → A17.81
  • Tuberculomaspinal cord → A17.81
  • Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative)brain → A17.81
  • Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative)cerebellum → A17.81
  • Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative)cerebral, cerebrum → A17.81
  • Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative)cerebrospinal → A17.81
  • Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative)epidural abscess (cerebral) (spinal) → A17.81
  • Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative)medulla → A17.81
  • Meningoencephalitistuberculous → A17.82
  • Meningomyelitistuberculous → A17.82
  • Myelitis (acute) (ascending) (childhood) (chronic) (descending) (diffuse) (disseminated) (idiopathic) (pressure) (progressive) (spinal cord) (subacute)tuberculous → A17.82
  • Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative)encephalitis → A17.82
  • Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative)meningoencephalitis → A17.82
  • Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative)myelitis → A17.82
  • Mononeuropathytuberculous → A17.83
  • Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative)nerve (mononeuropathy) → A17.83
  • Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative)polyneuropathy → A17.89
  • Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative)nervous system → A17.9
  • Adhesions, adhesive (postinfective)meninges (cerebral) (spinal)tuberculous (cerebral) (spinal) → A17.0
  • Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative)abscess (respiratory)meninges (cerebral) (spinal) → A17.0
  • Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative)cerebrospinalmeninges → A17.0
  • Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative)spine, spinal (column)membrane → A17.0
  • Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative)spine, spinal (column)meninges → A17.0
  • Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic)brain (any part) (cystic) (otogenic)tuberculous → A17.81
  • Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic)spinal cord (any part) (staphylococcal)tuberculous → A17.81
  • Degeneration, degenerativespinal (cord)tuberculous → A17.81
  • Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative)abscess (respiratory)brain → A17.81
  • Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative)abscess (respiratory)dura (mater) (cerebral) (spinal) → A17.81
  • Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative)abscess (respiratory)epidural (cerebral) (spinal) → A17.81
  • Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative)abscess (respiratory)spinal cord → A17.81
  • Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative)dura (mater) (cerebral) (spinal)abscess (cerebral) (spinal) → A17.81

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Hierarchy