H05.321 — Deformity of right orbit due to bone disease
Is H05.321 billable?
Yes — H05.321 is billable for FY2027. H05.321 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. H05.321 may be submitted for encounters from October 1, 2026 through September 30, 2027.
H05.321 at a glance
| Code | H05.321 |
|---|---|
| Description | Deformity of right orbit due to bone disease |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does H05.321 group to?
H05.321 sits in MDC 02 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.
- 124Other Disorders of the Eye with MCC or Thrombolytic Agentmedical
- 125Other Disorders of the Eye without MCCmedical
How is H05.321 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under H05.32, the nearest indexed parent of H05.321. Use them to find the family, then select the specific code.
- Deformity › orbit › due to › bone disease NEC
Excludes1 — never code together — inherited from H05
The conditions below can never be reported together with H05.321 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- congenital malformation of orbit (Q10.7)
Excludes1 — never code together — inherited from H05.3
The conditions below can never be reported together with H05.321 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Excludes2 — not included here — inherited from Chapter 7
The conditions below are not part of H05.321, but a patient may have both at the same time. When documentation supports it, H05.321 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)
- diabetes mellitus related eye conditions (E09.3-, E10.3-, E11.3-, E13.3-)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury (trauma) of eye and orbit (S05.-)
- 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)
- syphilis related eye disorders (A50.01, A50.3-, A51.43, A52.71)
Excludes2 — not included here — inherited from H00-H05
The conditions below are not part of H05.321, but a patient may have both at the same time. When documentation supports it, H05.321 and the excluded code may both be reported.
Code also — inherited from H05.32
Two codes may be needed to describe the condition fully. Whether H05.321 is sequenced first depends on the reason for the encounter.
- associated bone disease
How long has H05.321 existed?
H05.321 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.