H16.3 — Interstitial and deep keratitis
Not billable
Is H16.3 billable?
No — H16.3 is a non-billable header code. H16.3 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 20 billable codes beneath H16.3.
Billable codes under this header
- H16.301Unspecified interstitial keratitis, right eye
- H16.302Unspecified interstitial keratitis, left eye
- H16.303Unspecified interstitial keratitis, bilateral
- H16.309Unspecified interstitial keratitis, unspecified eye
- H16.311Corneal abscess, right eye
- H16.312Corneal abscess, left eye
- H16.313Corneal abscess, bilateral
- H16.319Corneal abscess, unspecified eye
- H16.321Diffuse interstitial keratitis, right eye
- H16.322Diffuse interstitial keratitis, left eye
- H16.323Diffuse interstitial keratitis, bilateral
- H16.329Diffuse interstitial keratitis, unspecified eye
- H16.331Sclerosing keratitis, right eye
- H16.332Sclerosing keratitis, left eye
- H16.333Sclerosing keratitis, bilateral
- H16.339Sclerosing keratitis, unspecified eye
- H16.391Other interstitial and deep keratitis, right eye
- H16.392Other interstitial and deep keratitis, left eye
- H16.393Other interstitial and deep keratitis, bilateral
- H16.399Other interstitial and deep keratitis, unspecified eye
H16.3 at a glance
| Code | H16.3 |
|---|---|
| Description | Interstitial and deep keratitis |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes2 — not included here — inherited from Chapter 7
The conditions below are not part of H16.3, but a patient may have both at the same time. When documentation supports it, H16.3 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)
What codes fall under H16.3? (5)
How long has H16.3 existed?
H16.3 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.