J64 — Unspecified pneumoconiosis
Is J64 billable?
Yes, but J64 is an unspecified code. J64 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, J64 is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting J64.
J64 at a glance
| Code | J64 |
|---|---|
| Description | Unspecified pneumoconiosis |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does J64 group to?
J64 sits in MDC 04 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 196Interstitial Lung Disease with MCCmedical
- 197Interstitial Lung Disease with CCmedical
- 198Interstitial Lung Disease without CC/MCCmedical
How is J64 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to J64. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Pneumoconiosis (due to) (inhalation of)
- Asthma, asthmatic › pneumoconiotic NEC (bronchial) (catarrh) (spasmodic)
- Fibrosis, fibrotic › lung › with › dust reticulation
- Fibrosis, fibrotic › lung › with › pneumoconiosis NOS
Excludes1 — never code together
The conditions below can never be reported together with J64 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Use additional code — inherited from Chapter 10
Report an additional code alongside J64 to fully describe the condition. J64 is sequenced first.
Excludes2 — not included here — inherited from Chapter 10
The conditions below are not part of J64, but a patient may have both at the same time. When documentation supports it, J64 and the excluded code may both be reported.
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- smoke inhalation (T59.81-)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Excludes2 — not included here — inherited from J60-J70
The conditions below are not part of J64, but a patient may have both at the same time. When documentation supports it, J64 and the excluded code may both be reported.
How long has J64 existed?
J64 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
Which codes are confused with J64?
ICD-10-CM declares these codes mutually exclusive with J64 — exactly one of each pair can be correct for a given encounter.