H16.22 ICD-10-CM Code: Keratoconjunctivitis sicca, not specified as Sjögren's
Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.
Official Registry Overview & Definition
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for H16.22 in the official ICD-10-CM tabular list.
Excludes1 — Not Coded Here
Conditions generally not reported together with this code (Excludes1) -- an error unless the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
- Sjögren's syndrome (M35.01) Compare H16.22 vs M35.01 →
Frequently Compared Codes
The official Excludes notes on H16.22 name these codes. Each comparison page covers when the two can — or must not — be reported together.
Change history
No changes recorded for this code — unchanged since the FY2016 baseline of the change ledger.
Verify Before Coding
From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim.
Relationships & Classification
Official ICD-10-CM tabular notes on other codes that name H16.22 or its code family.
2 Excludes1 notes: H10 (via H16.2.-), H11 (via H16.2.-).
1 Excludes2 notes: H44.1 (via H16.2.-).
1 Use Additional Code instructions: L51.
Contextual Map
Every relationship of H16.22 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.
Hierarchy
- H00-H59 — Chapter 7: Diseases of the Eye and Adnexa (H00-H59) (H00-H59) [Hierarchy]
- H15-H22 — Disorders of sclera, cornea, iris and ciliary body [Hierarchy]
Excludes1
- M35.01 — Sjögren syndrome with keratoconjunctivitis [Excludes1]: “Sjögren's syndrome (M35.01)” · check together
Referenced by Excludes1 notes
- H10 — Conjunctivitis [Excludes1](via H16.2.-): “keratoconjunctivitis (H16.2-)” · check together
- H11 — Other disorders of conjunctiva [Excludes1](via H16.2.-): “keratoconjunctivitis (H16.2-)” · check together
Referenced by Excludes2 notes
- H44.1 — Other endophthalmitis [Excludes2](via H16.2.-): “ophthalmia nodosa (H16.2-)” · check together
Referenced by Use Additional Code instructions
- L51 — Erythema multiforme [Use Additional Code]: “keratoconjunctivitis sicca (H16.22-)” · check together
Nearest codes (40)
- H16 — Keratitis [Sibling]
- H16.131 — Photokeratitis, right eye [Sibling]
- H16.132 — Photokeratitis, left eye [Sibling]
- H16.133 — Photokeratitis, bilateral [Sibling]
- H16.139 — Photokeratitis, unspecified eye [Sibling]
- H16.14 — Punctate keratitis [Sibling]
- H16.141 — Punctate keratitis, right eye [Sibling]
- H16.142 — Punctate keratitis, left eye [Sibling]
- and 32 more
Frequently Asked Questions (FAQ) & Clinical Guidance
Can H16.22 be billed directly?
No. H16.22 (Keratoconjunctivitis sicca, not specified as Sjögren's) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.
Nearest Codes in This Family
Official ICD-10-CM classifications closest to H16.22 in its code family, with their registry titles.
- H16.21 — Exposure keratoconjunctivitis
- H16.211 — Exposure keratoconjunctivitis, right eye
- H16.212 — Exposure keratoconjunctivitis, left eye
- H16.213 — Exposure keratoconjunctivitis, bilateral
- H16.219 — Exposure keratoconjunctivitis, unspecified eye
- H16.221 — Keratoconjunctivitis sicca, not specified as Sjögren's, right eye
- H16.222 — Keratoconjunctivitis sicca, not specified as Sjögren's, left eye
- H16.223 — Keratoconjunctivitis sicca, not specified as Sjögren's, bilateral
- H16.229 — Keratoconjunctivitis sicca, not specified as Sjögren's, unspecified eye
- H16.23 — Neurotrophic keratoconjunctivitis