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L57.2 ICD-10-CM Code: Cutis rhomboidalis nuchae

Compare with another codeCheck this code on a claim

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

Coding at a Glance

Tabular directives
1 use-additional code

Billable · FY2027A valid, specific ICD-10-CM code, reportable for dates of service in FY2027.

What you need to know

Source: CMS/NCHS Official ICD-10-CM tabular notes, quoted. From the CMS/NCHS tabular list for the release in force. A note the category or block publishes applies to this code too; the Instructions section marks which is which.

Use additional codeReport with this code when documented
  • code to identify the source of the ultraviolet radiation (W89), or other nonionizing radiation (W90)

Most relevant related codes MedCoder-derived

Read off the official notes above and this code’s own position in the tabular list. Which to report is a documentation question; Compare shows the two side by side.

CompareCheck ClaimView Related Codes

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 606 — MINOR SKIN DISORDERS WITH MCC (MDC 09)
  • MS-DRG 607 — MINOR SKIN DISORDERS WITHOUT MCC (MDC 09)

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 L57.2 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 L57.2 itself; “inherited from” names the category or block whose note applies here.

Use Additional Code

Supplementary codes the tabular list directs you to add.

  • Use additional code to identify the source of the ultraviolet radiation (W89), or other nonionizing radiation (W90)

Source: inherited from L57

Coder workflow for L57.2

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

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).
Acuity
Acute or chronic as documented; when both are documented and separate codes exist, both are reported with the acute code first (Guidelines I.B.8).
The conditions the Use Additional Code note names
Reported with this code when documented; a conditional instruction (“if applicable”, “if known”) applies only when the record supports it.

Official instructions as workflow

  • Use Additional Code — after identifying L57.2(1 note)

    Coding workflow: Check whether the documentation supports the additional code(s) the note names, and report them with L57.2 when it does. Where the instruction is conditional (“if applicable”, “if known”), it applies only when the record documents the condition.

    ReviewW89, W90

    See the official tabular notes · Guidelines I.A.13

Coding decision scenarios

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

Documentation: A condition the Use Additional Code note names is documented.

Coding question: Is a second code reported with L57.2?

Path: Review the Use Additional Code note and the code it names.

Reason: The additional code is reported when the record documents the condition; a conditional instruction applies only when its condition is met (Guidelines I.A.13).

ReviewW89, W90

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 L57.2 with…

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

The codes most likely to be picked instead of L57.2 — 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.

  • L57.9— Specificity relationship (Review)

    Overlapping diagnoses in the same category.

    Overlapping codes in the same category — the documentation decides which is the more specific fit.

    What moves you there: A record that documents no more than “Skin changes due to chronic exposure to nonionizing radiation, unspecified” takes L57.9; specificity in the record moves it back here.

    Full comparison: L57.2 vs L57.9 →

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.

Coding context

Guidelines, coding notes, decision aids, relationships (with MS-DRG and CCSR classification), hierarchy, HCC, coverage and the context map: what a coder reaches for after the core. Each section names whether it is official source data, a MedCoder-derived relationship or MedCoder editorial.

Code Overview

Cutis rhomboidalis nuchae is a billable ICD-10-CM diagnosis code (L57.2).

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-derived relationships — computed from published CMS and AHRQ datasets

Other codes that name L57.2 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 3 Excludes1 notes across 2 chapters: K13.0 — Diseases of lips (via L57.-), T66 — Radiation sickness, unspecified (via L57.-), T67 — Effects of heat and light (via L57.-).

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

Referenced by 15 Excludes2 notes across 3 chapters: L20 — Atopic dermatitis (via L57.-), L20-L30 — Dermatitis and eczema (L20-L30) (via L57.-), L21 — Seborrheic dermatitis (via L57.-), L22 — Diaper dermatitis (via L57.-), L23 — Allergic contact dermatitis (via L57.-), L24 — Irritant contact dermatitis (via L57.-), L25 — Unspecified contact dermatitis (via L57.-), L26 — Exfoliative dermatitis (via L57.-), L27 — Dermatitis due to substances taken internally (via L57.-), L28 — Lichen simplex chronicus and prurigo (via L57.-), L29 — Pruritus (via L57.-), L30 — Other and unspecified dermatitis (via L57.-), L98.7 — Excessive and redundant skin and subcutaneous tissue (via L57.-), T20-T32 — Burns and corrosions (T20-T32) (via L57.-), X32 — Exposure to sunlight (via L57.-).

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 606 (MDC 09), DRG 607 (MDC 09).

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

Clinical classification (AHRQ CCSR):SKN007 — Other specified and unspecified skin disorders (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 clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Other specified and unspecified skin disorders).

L30.8 — Other specified dermatitis, L30.9 — Dermatitis, unspecified, L56.0 — Drug phototoxic response, L56.1 — Drug photoallergic response, L56.2 — Photocontact dermatitis [berloque dermatitis], L56.3 — Solar urticaria, L56.4 — Polymorphous light eruption, L56.5 — Disseminated superficial actinic porokeratosis (DSAP), L57.0 — Actinic keratosis, L57.1 — Actinic reticuloid, L57.3 — Poikiloderma of Civatte, L57.4 — Cutis laxa senilis, L57.5 — Actinic granuloma, L60.0 — Ingrowing nail, L60.1 — Onycholysis, L60.2 — Onychogryphosis, L60.3 — Nail dystrophy, L60.4 — Beau's lines, L60.5 — Yellow nail syndrome, L60.8 — Other nail disorders, +137 more

Same Index main term, other category

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

L91.8 — Other hypertrophic disorders of the skin (verticis gyrata, acquired), L94.2 — Calcinosis cutis (osteosis), Q82.8 — Other specified congenital malformations of skin (hyperelastica), R23.8 — Other skin changes (marmorata)

Contextual Map

Every relationship of L57.2 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 L57.2 with these 11 related codes in Claim Check

Hierarchy

Referenced by Excludes1 notes

  • K13.0 — Diseases of lips[Excludes1](via L57.-): “cheilitis due to radiation-related disorders (L55-L59)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2027
  • T66 — Radiation sickness, unspecified[Excludes1](via L57.-): “radiation related disorders of the skin and subcutaneous tissue (L55-L59)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2027
  • T67 — Effects of heat and light[Excludes1](via L57.-): “radiation-related disorders of the skin and subcutaneous tissue (L55-L59)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2027

Referenced by Excludes2 notes (15)

  • L20 — Atopic dermatitis[Excludes2](via L57.-): “radiation-related disorders of the skin and subcutaneous tissue (L55-L59)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2027
  • L20-L30 — Dermatitis and eczema (L20-L30)[Excludes2](via L57.-): “radiation-related disorders of the skin and subcutaneous tissue (L55-L59)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2027
  • L21 — Seborrheic dermatitis[Excludes2](via L57.-): “radiation-related disorders of the skin and subcutaneous tissue (L55-L59)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2027
  • L22 — Diaper dermatitis[Excludes2](via L57.-): “radiation-related disorders of the skin and subcutaneous tissue (L55-L59)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2027
  • L23 — Allergic contact dermatitis[Excludes2](via L57.-): “radiation-related disorders of the skin and subcutaneous tissue (L55-L59)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2027
  • L24 — Irritant contact dermatitis[Excludes2](via L57.-): “radiation-related disorders of the skin and subcutaneous tissue (L55-L59)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2027
  • L25 — Unspecified contact dermatitis[Excludes2](via L57.-): “radiation-related disorders of the skin and subcutaneous tissue (L55-L59)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2027
  • L26 — Exfoliative dermatitis[Excludes2](via L57.-): “radiation-related disorders of the skin and subcutaneous tissue (L55-L59)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2027
  • and 7 more

Clinical classification (CCSR)

MS-DRG Grouper

MDC crossing

  • MDC 09 — Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast[MDC crossing]: “Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast — 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. 7,378 same-MDC procedures group here; browse them on the MDC page.”— CMS MS-DRG Definitions Manual · FY2027

Index entries

  • Cutis, rhomboidalis nuchae[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2027

Nearest codes

Change history

  • FY2016 — In the code set at ICD-10-CM adoption [Change history]— CMS release files (code change ledger) · icd10cm-fy2016

Reference

Index terms and tables, published questions and FAQ, every source behind this page with its release and checksum, the date-of-service check and the complete change history.

Indexed Clinical Terms (1)

Official source data — entries quoted as published, in the Index’s own lookup phrasing

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code. These are alphabetic-index entries shown as the Index writes them — lookup phrasing, not necessarily the wording of a final diagnosis.

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-derived 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 editorial 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.

Current data releases:ICD-10-CM FY2027 · ICD-10-PCS FY2027 · HCPCS October 2026 · MS-DRG v44 · Medicare Code Editor v44.0 · NCCI PTP Q4 2026 · MUE Q4 2026 · NCD code lists 2026-01 · LCD export September 28, 2026 · All releases and sources

Labels on this page: Official source data · MedCoder-derived relationship · MedCoder editorial explanation. How to read the labels · All data sources and release dates · CMS coding rules

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. "L57.2 — Cutis rhomboidalis nuchae." ICD-10-CM FY2027. https://medcoder.ai/icd10/code/l57.2-cutis-rhomboidalis-nuchae

Change history

  • FY2016 — October 1, 2015
    In the code set at ICD-10-CM adoption
    Cutis rhomboidalis nuchae

No changes since FY2016 — additions, deletions, description changes and billable-status changes are tracked through FY2027, and none are recorded for this code. Note changes are tracked from FY2027 only.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to L57.2 in its code family, with their registry titles.

View all codes in the L57 family