A18: Tuberculosis of other organs
Codes under A18 (Tuberculosis of other organs). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| A18.0 | Tuberculosis of bones and joints | — |
| A18.0 | Tuberculosis of bones and joints | — |
| A18.01 | Tuberculosis of spine | ✓ |
| A18.01 | Tuberculosis of spine | ✓ |
| A18.1 | Tuberculosis of genitourinary system | — |
| A18.1 | Tuberculosis of genitourinary system | — |
| A18.02 | Tuberculous arthritis of other joints | ✓ |
| A18.02 | Tuberculous arthritis of other joints | ✓ |
| A18.2 | Tuberculous peripheral lymphadenopathy | ✓ |
| A18.2 | Tuberculous peripheral lymphadenopathy | ✓ |
| A18.03 | Tuberculosis of other bones | ✓ |
| A18.03 | Tuberculosis of other bones | ✓ |
| A18.3 | Tuberculosis of intestines, peritoneum and mesenteric glands | — |
| A18.3 | Tuberculosis of intestines, peritoneum and mesenteric glands | — |
| A18.4 | Tuberculosis of skin and subcutaneous tissue | ✓ |
| A18.4 | Tuberculosis of skin and subcutaneous tissue | ✓ |
| A18.5 | Tuberculosis of eye | — |
| A18.5 | Tuberculosis of eye | — |
| A18.6 | Tuberculosis of (inner) (middle) ear | ✓ |
| A18.6 | Tuberculosis of (inner) (middle) ear | ✓ |
| A18.7 | Tuberculosis of adrenal glands | ✓ |
| A18.7 | Tuberculosis of adrenal glands | ✓ |
| A18.8 | Tuberculosis of other specified organs | — |
| A18.8 | Tuberculosis of other specified organs | — |
| A18.09 | Other musculoskeletal tuberculosis | ✓ |
| A18.09 | Other musculoskeletal tuberculosis | ✓ |
| A18.10 | Tuberculosis of genitourinary system, unspecified | ✓ |
| A18.10 | Tuberculosis of genitourinary system, unspecified | ✓ |
| A18.11 | Tuberculosis of kidney and ureter | ✓ |
| A18.11 | Tuberculosis of kidney and ureter | ✓ |
| A18.12 | Tuberculosis of bladder | ✓ |
| A18.12 | Tuberculosis of bladder | ✓ |
| A18.13 | Tuberculosis of other urinary organs | ✓ |
| A18.13 | Tuberculosis of other urinary organs | ✓ |
| A18.14 | Tuberculosis of prostate | ✓ |
| A18.14 | Tuberculosis of prostate | ✓ |
| A18.15 | Tuberculosis of other male genital organs | ✓ |
| A18.15 | Tuberculosis of other male genital organs | ✓ |
| A18.16 | Tuberculosis of cervix | ✓ |
| A18.16 | Tuberculosis of cervix | ✓ |
| A18.17 | Tuberculous female pelvic inflammatory disease | ✓ |
| A18.17 | Tuberculous female pelvic inflammatory disease | ✓ |
| A18.18 | Tuberculosis of other female genital organs | ✓ |
| A18.18 | Tuberculosis of other female genital organs | ✓ |
| A18.31 | Tuberculous peritonitis | ✓ |
| A18.31 | Tuberculous peritonitis | ✓ |
| A18.32 | Tuberculous enteritis | ✓ |
| A18.32 | Tuberculous enteritis | ✓ |
| A18.39 | Retroperitoneal tuberculosis | ✓ |
| A18.39 | Retroperitoneal tuberculosis | ✓ |
| A18.50 | Tuberculosis of eye, unspecified | ✓ |
| A18.50 | Tuberculosis of eye, unspecified | ✓ |
| A18.51 | Tuberculous episcleritis | ✓ |
| A18.51 | Tuberculous episcleritis | ✓ |
| A18.52 | Tuberculous keratitis | ✓ |
| A18.52 | Tuberculous keratitis | ✓ |
| A18.53 | Tuberculous chorioretinitis | ✓ |
| A18.53 | Tuberculous chorioretinitis | ✓ |
| A18.54 | Tuberculous iridocyclitis | ✓ |
| A18.54 | Tuberculous iridocyclitis | ✓ |
| A18.59 | Other tuberculosis of eye | ✓ |
| A18.59 | Other tuberculosis of eye | ✓ |
| A18.81 | Tuberculosis of thyroid gland | ✓ |
| A18.81 | Tuberculosis of thyroid gland | ✓ |
| A18.82 | Tuberculosis of other endocrine glands | ✓ |
| A18.82 | Tuberculosis of other endocrine glands | ✓ |
| A18.83 | Tuberculosis of digestive tract organs, not elsewhere classified | ✓ |
| A18.83 | Tuberculosis of digestive tract organs, not elsewhere classified | ✓ |
| A18.84 | Tuberculosis of heart | ✓ |
| A18.84 | Tuberculosis of heart | ✓ |
| A18.85 | Tuberculosis of spleen | ✓ |
| A18.85 | Tuberculosis of spleen | ✓ |
| A18.89 | Tuberculosis of other sites | ✓ |
| A18.89 | Tuberculosis of other sites | ✓ |
Frequently asked questions
What is ICD-10-CM code A18?
A18 is an ICD-10-CM category covering Tuberculosis of other organs. It contains 74 more specific diagnosis codes, 64 of which are billable.
Is A18 a billable code?
No — A18 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example A18.0 — Tuberculosis of bones and joints). 64 of the 74 codes under A18 are billable.
What codes fall under A18?
A18 includes A18.0, A18.0, A18.01, A18.01, A18.1, plus 69 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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