H10.31 is not a CMS-HCC payment code. MEAT criteria · RAF Calculator · HCC Buddy coding tools

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Code lookupH10.31

Effective periodFY2026 Apr Update (Apr 1-Sep 30)

FY 2026 Apr update / Diseases of the eye and adnexa (H00-H59) / Disorders of conjunctiva (H10-H11)

H10.31

Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidance

Unspecified acute conjunctivitis, right eye

This code describes sudden inflammation of the clear membrane covering the white part of the right eye, with the specific cause not identified. It's commonly known as pink eye and typically develops quickly with redness, irritation, and discharge.

Overview Risk Models Code Book Documentation Audit Notes Edition comparison

CMS-HCC V28

N/A

—

Not risk-adjusted for this model/period.

Not mapped

CMS-HCC V24

Historical

Not used for standard CY2026 Medicare Advantage payment. Select a historical period to review V24.

Not used for CY2026 payment

ACA/HHS

N/A

—

Not risk-adjusted for this model/period.

Not mapped

ESRD/PACE

N/A

—

Not risk-adjusted for this model/period.

Not mapped

RXHCC

N/A

—

Not risk-adjusted for this model/period.

Not mapped

Code Book Path

Official

H10Conjunctivitis H10.3Unspecified acute conjunctivitis H10.31Unspecified acute conjunctivitis, right eye

Inclusion Terms

Official

No inclusion terms are included in this display for H10.31. Check the code and parent instructions in the Code Book.

Excludes 2

Official

certain conditions originating in the perinatal period (P04-P96)Inherited from H00-H59
certain infectious and parasitic diseases (A00-B99)Inherited from H00-H59
complications of pregnancy, childbirth and the puerperium (O00-O9A)Inherited from H00-H59
congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Inherited from H00-H59
diabetes mellitus related eye conditions (E09.3-, E10.3-, E11.3-, E13.3-)Inherited from H00-H59
endocrine, nutritional and metabolic diseases (E00-E88)Inherited from H00-H59
injury (trauma) of eye and orbit (S05.-)Inherited from H00-H59
injury, poisoning and certain other consequences of external causes (S00-T88)Inherited from H00-H59
neoplasms (C00-D49)Inherited from H00-H59
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)Inherited from H00-H59
syphilis related eye disorders (A50.01, A50.3-, A51.43, A52.71)Inherited from H00-H59

Related Codes

Official

H10.30Unspecified acute conjunctivitis, unspecified eye H10.32Unspecified acute conjunctivitis, left eye H10.33Unspecified acute conjunctivitis, bilateral

Includes

Official

No Includes notes are included in this display for H10.31. Check the code and parent instructions in the Code Book.

Excludes 1

Official

keratoconjunctivitis (H16.2-)Inherited from H10, H10.3
ophthalmia neonatorum NOS (P39.1)Inherited from H10, H10.3

Code First

Official

No Code First sequencing instructions are included in this display for H10.31. Check the code and parent instructions in the Code Book.

Use Additional

Official

No Use Additional Code instructions are included in this display for H10.31. Check the code and parent instructions in the Code Book.

Code Also

Official

No Code Also instructions are included in this display for H10.31. Check the code and parent instructions in the Code Book.

Buddy Documentation Tip

HCC Buddy guidance

Verify documentation specifies the right eye; if both eyes are affected, use separate codes for each eye (H10.31 for right, H10.32 for left, or H10.33 for bilateral)

Use this code only when the provider documents acute conjunctivitis without identifying a specific cause; if a cause is documented (bacterial, viral, allergic, etc.), use the more specific code instead

Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →

Is H10.31 an HCC code?

No. H10.31 is a billable ICD-10-CM code with no mapping under the current CMS-HCC V28 community payment model, and none under the ESRD, Part D RxHCC, or HHS-HCC models.

Code: H10.31
Description: Unspecified acute conjunctivitis, right eye
HCC (V28): No CMS-HCC V28 mapping
RAF reference coefficient: —
Billable: Yes
Payment year: 2026

Coder workflow notes

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What This Code Means

H10.31 is the ICD-10-CM diagnosis code for unspecified acute conjunctivitis, right eye. This code describes sudden inflammation of the clear membrane covering the white part of the right eye, with the specific cause not identified. It's commonly known as pink eye and typically develops quickly with redness, irritation, and discharge. H10.31 sits in the ICD-10-CM chapter for diseases of the eye and adnexa (h00-h59), within the section covering disorders of conjunctiva (h10-h11).

H10.31 is a billable ICD-10-CM code, but no current CMS-HCC V28 community payment mapping is shown, and none under the ESRD, Part D RxHCC, or HHS-HCC models. Do not assign risk adjustment value from this page when no source-backed mapping is shown; verify the applicable model and payment year.

Verify documentation specifies the right eye; if both eyes are affected, use separate codes for each eye (H10.31 for right, H10.32 for left, or H10.33 for bilateral).

HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for H10.31 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Coding Tips

•Verify documentation specifies the right eye; if both eyes are affected, use separate codes for each eye (H10.31 for right, H10.32 for left, or H10.33 for bilateral)
•Use this code only when the provider documents acute conjunctivitis without identifying a specific cause; if a cause is documented (bacterial, viral, allergic, etc.), use the more specific code instead