Skip to main content

D22.112 ICD-10-CM Code: Melanocytic nevi of right lower eyelid, including canthus

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Coding at a Glance

Tabular directives
3 inclusion terms

Inpatient Payment Groups (MS-DRG)

Potential MS-DRG participation — not a DRG assignment.

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v44, Appendix B.

  • MS-DRG 124 — OTHER DISORDERS OF THE EYE WITH MCC OR THROMBOLYTIC AGENT (MDC 02)
  • MS-DRG 125 — OTHER DISORDERS OF THE EYE WITHOUT MCC (MDC 02)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for D22.112 in the official ICD-10-CM tabular list, quoted as published.

Source: CMS/CDC — ICD-10-CM Tabular ListRelease: FY2027Effective: October 1, 2026

Trace:FY2027 changesChange historyRelease, file and checksum

Notes without a marker are published on D22.112 itself; “inherited from” names the category or block whose note applies here.

Includes

Conditions the official ICD-10-CM tabular list includes under this code.

  • atypical nevus
  • blue hairy pigmented nevus
  • nevus NOS

Source: inherited from D22

Coder workflow for D22.112

MedCoder structured workflow — derived from this code’s own official record

Before you code D22.112

  1. Laterality is coded in this family. Confirm the side documented — right, left, or bilateral — and select the matching code (this page’s code: right). The unspecified-side code applies only when the record states no side. Laterality is assigned from the documented side; where a bilateral code exists and both sides are documented, it is used instead of two unilateral codes (Guidelines I.B.13).

    See the relationships section · Guide: Laterality coding →

  2. Confirm the documented site and behavior (this code’s block classifies benign neoplasms), whether the site is primary or secondary, and whether the malignancy is current or a personal history: a previously excised malignancy with no further treatment and no evidence of disease is history, not current disease. Verify the site against the Table of Neoplasms. Neoplasm chapter guidelines (Guidelines I.C.2.a, I.C.2.d, I.C.2.m).

    See the Table of Neoplasms entries · Guide: Active cancer vs history of cancer →

Choose the right path

  1. Is the side documented?
    Yes → Select the code for the documented side (or the bilateral code when both sides are documented and one exists).
    No → Use the unspecified-side code only when the record states no side; a query is the alternative.

Consider D22.112. Then confirm the code is valid for the date of service in the Verify section.

Documentation check

The provider’s diagnostic statement
Codes are assigned from the provider’s documented diagnosis, not from clinical criteria, test values or a medication list (Guidelines I.A.19).
Anatomical site
At the most specific level the record states; a site the classification separates cannot be assumed from a procedure or a measurement.
Laterality
Right, left or bilateral as documented; unspecified only when the record states no side (Guidelines I.B.13).
Behavior and current-versus-history status
Malignant, in situ, benign or uncertain; primary or secondary; current disease or personal history (Guidelines I.C.2.m).

Coding decision scenarios

Pattern scenarios for this code’s structure — decision rules, not clinical cases

Documentation: The record documents the condition on one side only.

Coding question: Which code in this family applies?

Path: Select the sibling code for the documented side.

Reason: Laterality is assigned from the documented side; the unspecified-side code is for records that state no side (Guidelines I.B.13).

Every row is derived from this code’s own record — its title, tabular notes, 7th-character family and same-category siblings — with fixed MedCoder wording; nothing is inferred about a patient. The official notes and guideline text are in the sections each row links to, and they control.

Don’t confuse D22.112 with…

MedCoder analysis — pairs from this code’s official notes, distinctions written by MedCoder

The codes most likely to be picked instead of D22.112 — named in its own official notes, or sharing its laterality or encounter family — with what separates them and which documentation moves the case. Each links to the full comparison.

  • D22.122— Laterality relationship (Review)

    Same condition; these differ only in which side is documented.

    The same condition on the other side; the documented side decides, and a bilateral code, where one exists, replaces the pair when both sides are documented.

    What moves you there: A documented left side moves the case to D22.122.

    Full comparison: D22.112 vs D22.122 →

Relationships are read from this code's own official notes, its laterality siblings and its encounter family; the wording of each distinction is MedCoder editorial, and the documentation named in each “what moves you there” line is the official note phrase or sibling title itself. Source: CMS ICD-10-CM tabular instructional notes; ICD-10-CM Official Guidelines, Section I.A.12.a.

Code Overview

Melanocytic nevi of right lower eyelid, including canthus is a billable ICD-10-CM diagnosis code (D22.112).

MedCoder summary Summary composed by MedCoder from this code's official ICD-10-CM record. The tabular instructional notes themselves appear verbatim below.

Verify Before Coding

  • No Medicare Code Editor or MS-DRG Definitions Manual restrictions apply to this code.

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim in Claim Check.

Relationships & Classification

MedCoder structured relationships — computed from published CMS and AHRQ datasets

Other codes that name D22.112 or its code family, from the CMS ICD-10-CM tabular instructional notes. Tabular-note edges are stored at the code family level that carries each note.

Referenced by 2 Excludes1 notes across 2 chapters: D31 — Benign neoplasm of eye and adnexa (via D22.1.-), I78.1 — Nevus, non-neoplastic (via D22.-).

These codes’ tabular lists mark this diagnosis as mutually exclusive — not reported together unless the conditions are documented as unrelated.

Referenced by 4 Excludes2 notes across 3 chapters: D18 — Hemangioma and lymphangioma, any site (via D22.-), D23 — Other benign neoplasms of skin (via D22.-), I78.1 — Nevus, non-neoplastic (via D22.-), Q82.5 — Congenital non-neoplastic nevus (via D22.-).

These codes’ tabular lists name this diagnosis as distinct — both may be reported when both are documented.

MS-DRG Grouper Relationships (FY2027)

Potential MS-DRG participation — not a DRG assignment.

FY2027 MS-DRG: not on the CMS CC/MCC list — as a secondary diagnosis this code does not change MS-DRG severity for that release.

Named in the grouper logic of 2 MS-DRGs: DRG 124 (MDC 02), DRG 125 (MDC 02).

From the CMS MS-DRG Definitions Manual (Appendices B and C). Actual DRG assignment depends on the complete claim.

Clinical classification (AHRQ CCSR):NEO073 — Benign neoplasms (default).

Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses. Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality.

Related Codes

Same condition, opposite side

Same category and title, differing only in which side of the body is affected.

D22.122 — Melanocytic nevi of left lower eyelid, including canthusCompare D22.112 vs D22.122 →

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Benign neoplasms).

D21.22 — Benign neoplasm of connective and other soft tissue of left lower limb, including hip, D21.3 — Benign neoplasm of connective and other soft tissue of thorax, D21.4 — Benign neoplasm of connective and other soft tissue of abdomen, D21.5 — Benign neoplasm of connective and other soft tissue of pelvis, D21.6 — Benign neoplasm of connective and other soft tissue of trunk, unspecified, D21.9 — Benign neoplasm of connective and other soft tissue, unspecified, D22.0 — Melanocytic nevi of lip, D22.10 — Melanocytic nevi of unspecified eyelid, including canthus, D22.11 — Melanocytic nevi of right eyelid, including canthus, D22.111 — Melanocytic nevi of right upper eyelid, including canthus, D22.12 — Melanocytic nevi of left eyelid, including canthus, D22.121 — Melanocytic nevi of left upper eyelid, including canthus, D22.122 — Melanocytic nevi of left lower eyelid, including canthus, D22.20 — Melanocytic nevi of unspecified ear and external auricular canal, D22.21 — Melanocytic nevi of right ear and external auricular canal, D22.22 — Melanocytic nevi of left ear and external auricular canal, D22.30 — Melanocytic nevi of unspecified part of face, D22.39 — Melanocytic nevi of other parts of face, D22.4 — Melanocytic nevi of scalp and neck, D22.5 — Melanocytic nevi of trunk, +252 more

Same Index main term, other category

The ICD-10-CM Index to Diseases and Injuries files this code under the main term “Nevus”; these codes share that main term but sit in a different category of the Tabular List.

D10.30 — Benign neoplasm of unspecified part of mouth (mouth), D10.39 — Benign neoplasm of other parts of mouth (mouth, specified site NEC), D18.00 — Hemangioma unspecified site (cavernous), D18.01 — Hemangioma of skin and subcutaneous tissue (cavernous, skin), D18.02 — Hemangioma of intracranial structures (cavernous, intracranial), D18.03 — Hemangioma of intra-abdominal structures (cavernous, intra-abdominal), D18.09 — Hemangioma of other sites (cavernous, specified site NEC), D18.1 — Lymphangioma, any site (lymphatic), D28.0 — Benign neoplasm of vulva (skin, vulva), D29.0 — Benign neoplasm of penis (skin, penis), D29.4 — Benign neoplasm of scrotum (skin, scrotum), D29.9 — Benign neoplasm of male genital organ, unspecified (skin, male genital organ), D31.0 — Benign neoplasm of conjunctiva (conjunctiva), D31.2 — Benign neoplasm of retina (retina), D31.3 — Benign neoplasm of choroid (choroid), D31.4 — Benign neoplasm of ciliary body (iris), D31.40 — Benign neoplasm of unspecified ciliary body (magnocellular, unspecified site), D31.5 — Benign neoplasm of lacrimal gland and duct (lacrimal gland), D31.6 — Benign neoplasm of unspecified site of orbit (orbit), D31.9 — Benign neoplasm of unspecified part of eye (eye), +5 more

Lab tests where this diagnosis supports Medicare coverage (NCD)

Medicare's National Coverage Determination (NCD) program lists this diagnosis as medical justification for these lab tests.

Iron Panel

Contextual Map

Every relationship of D22.112 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.

Run D22.112 with these 5 related codes in Claim Check

Hierarchy

Referenced by Excludes1 notes

Referenced by Excludes2 notes

Clinical classification (CCSR)

MS-DRG Grouper

MDC crossing

  • MDC 02 — Diseases and Disorders of the Eye[MDC crossing]: “Diseases and Disorders of the Eye — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs. 1,200 same-MDC procedures group here; browse them on the MDC page.”— CMS MS-DRG Definitions Manual · FY2027

Nearest codes (27)

Change history

Sources for this page

Codes, titles, notes, index terms and mappings on this page are transcribed from the datasets below. Relationships MedCoder computed and text MedCoder wrote are labelled where they appear.

Code, title, tabular notes and index terms Official source data
CMS/CDC ICD-10-CM FY2027 tabular list, index and tables, effective October 1, 2026 Release, file and checksum · Publisher’s page
Claim edits Official source data
CMS Definitions of Medicare Code Edits — v44.0 (October 2026) Release, file and checksum · Publisher’s page
Inpatient payment groups Official source data
CMS MS-DRG Definitions Manual (incl. Appendix B diagnosis index, Appendix C CC/MCC list, Appendix E procedure index) and IPPS Final Rule tables — v44 Release, file and checksum · Publisher’s page
Change history and date-of-service validity Official source data
CMS ICD-10-CM release addenda, ingested release by release into the change ledger Release, file and checksum · Publisher’s page
Comparisons, relationships and the contextual map MedCoder structured relationship
Computed by MedCoder from the tabular notes and tables above; every derived relationship is marked as derived where it appears
Summary and FAQ answers MedCoder explanation
Written by MedCoder to explain the sources above: drafted with AI assistance, checked by a person against the release files, and labelled as MedCoder text where it appears. Not official text.

Labels on this page: Official source data · MedCoder structured relationship · MedCoder explanation. How to read the labels · All data sources and release dates

Cite this page

Reference this page in a research guide, syllabus or article. The release is included because code content changes each year.

MedCoder.ai. "D22.112 — Melanocytic nevi of right lower eyelid, including canthus." ICD-10-CM FY2027. https://medcoder.ai/icd10/code/d22.112-melanocytic-nevi-of-right-lower-eyelid-including-canthus

Change history

  • FY2019 — October 1, 2018
    Added to the code set
    Melanocytic nevi of right lower eyelid, including canthus
    FY2019 changes

Nearest Codes in This Family

Official ICD-10-CM classifications closest to D22.112 in its code family, with their registry titles.

View all codes in the D22 family