M19.042 — Primary osteoarthritis, left hand
Is M19.042 billable?
Yes — M19.042 is billable for FY2027. M19.042 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. M19.042 may be submitted for encounters from October 1, 2026 through September 30, 2027.
M19.042 at a glance
| Code | M19.042 |
|---|---|
| Description | Primary osteoarthritis, left hand |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does M19.042 group to?
M19.042 sits in MDC 08 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 553Bone Diseases and Arthropathies with MCCmedical
- 554Bone Diseases and Arthropathies without MCCmedical
How is M19.042 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under M19.04, the nearest indexed parent of M19.042. Use them to find the family, then select the specific code.
- Osteoarthritis › hand joint
- Osteoarthritis › hand joint › primary
- Osteoarthritis › primary › hand joint
Excludes1 — never code together — inherited from M19
The conditions below can never be reported together with M19.042 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- polyarthritis (M15.-)
Excludes2 — not included here — inherited from Chapter 13
The conditions below are not part of M19.042, but a patient may have both at the same time. When documentation supports it, M19.042 and the excluded code may both be reported.
- arthropathic psoriasis (L40.5-)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- compartment syndrome (traumatic) (T79.A-)
- 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)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Excludes2 — not included here — inherited from M15-M19
The conditions below are not part of M19.042, but a patient may have both at the same time. When documentation supports it, M19.042 and the excluded code may both be reported.
- osteoarthritis of spine (M47.-)
Excludes2 — not included here — inherited from M19
The conditions below are not part of M19.042, but a patient may have both at the same time. When documentation supports it, M19.042 and the excluded code may both be reported.
Excludes2 — not included here — inherited from M19.04
The conditions below are not part of M19.042, but a patient may have both at the same time. When documentation supports it, M19.042 and the excluded code may both be reported.
How long has M19.042 existed?
M19.042 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.